diff --git a/.github/workflows/bazel-checks.yml b/.github/workflows/bazel-checks.yml
index dc9dcb97ce0a8..aa318569532ec 100644
--- a/.github/workflows/bazel-checks.yml
+++ b/.github/workflows/bazel-checks.yml
@@ -22,7 +22,7 @@ jobs:
     if: github.repository == 'llvm/llvm-project'
     steps:
       - name: Fetch LLVM sources
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
       - name: Setup Buildifier
         run: |
           sudo curl -L https://github.com/bazelbuild/buildtools/releases/download/v8.2.1/buildifier-linux-amd64 -o /usr/bin/buildifier --fail
@@ -41,7 +41,7 @@ jobs:
     if: github.repository == 'llvm/llvm-project'
     steps:
       - name: Fetch LLVM sources
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         # TODO(boomanaiden154): We should use a purpose built container for this. Move
         # over when we have fixed the issues with using custom containers with Github
         # ARC in GKE.
diff --git a/.github/workflows/build-ci-container-tooling.yml b/.github/workflows/build-ci-container-tooling.yml
index 531da2ccbd446..c75d84829bba6 100644
--- a/.github/workflows/build-ci-container-tooling.yml
+++ b/.github/workflows/build-ci-container-tooling.yml
@@ -41,7 +41,7 @@ jobs:
             target: abi-tests
     steps:
       - name: Checkout LLVM
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           sparse-checkout: |
             .github/workflows/containers/github-action-ci-tooling/
@@ -67,7 +67,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Checkout LLVM
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           sparse-checkout: |
             .github/actions/push-container
diff --git a/.github/workflows/build-ci-container-windows.yml b/.github/workflows/build-ci-container-windows.yml
index 3996948bb44e0..3fd1c73d0ee40 100644
--- a/.github/workflows/build-ci-container-windows.yml
+++ b/.github/workflows/build-ci-container-windows.yml
@@ -25,7 +25,7 @@ jobs:
       container-filename: ${{ steps.vars.outputs.container-filename }}
     steps:
       - name: Checkout LLVM
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           sparse-checkout: .github/workflows/containers/github-action-ci-windows
       - name: Write Variables
diff --git a/.github/workflows/build-ci-container.yml b/.github/workflows/build-ci-container.yml
index ddb803fb969ff..e17e852166cee 100644
--- a/.github/workflows/build-ci-container.yml
+++ b/.github/workflows/build-ci-container.yml
@@ -36,7 +36,7 @@ jobs:
           - cd $HOME && printf '#include <iostream>\nint main(int argc, char **argv) { std::cout << "Hello\\n"; }' | clang++ -x c++ - && ./a.out | grep Hello
     steps:
       - name: Checkout LLVM
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           sparse-checkout: |
             .github/workflows/containers/github-action-ci/
@@ -62,7 +62,7 @@ jobs:
       GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
     steps:
       - name: Checkout LLVM
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           sparse-checkout: |
             .github/actions/push-container
diff --git a/.github/workflows/build-metrics-container.yml b/.github/workflows/build-metrics-container.yml
index e1407a29cc295..0436e6ec82fda 100644
--- a/.github/workflows/build-metrics-container.yml
+++ b/.github/workflows/build-metrics-container.yml
@@ -23,7 +23,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Checkout LLVM
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           sparse-checkout: |
             .ci/metrics/
@@ -46,7 +46,7 @@ jobs:
       GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
     steps:
       - name: Checkout LLVM
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           sparse-checkout: |
             .github/actions/push-container
diff --git a/.github/workflows/check-ci.yml b/.github/workflows/check-ci.yml
index 7fecb010a64ff..914ead803181e 100644
--- a/.github/workflows/check-ci.yml
+++ b/.github/workflows/check-ci.yml
@@ -22,7 +22,7 @@ jobs:
     if: github.repository == 'llvm/llvm-project'
     steps:
       - name: Fetch LLVM sources
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           sparse-checkout: .ci
       - name: Setup Python
diff --git a/.github/workflows/ci-post-commit-analyzer.yml b/.github/workflows/ci-post-commit-analyzer.yml
index 59df0b68a8ad7..abd64809f9dc9 100644
--- a/.github/workflows/ci-post-commit-analyzer.yml
+++ b/.github/workflows/ci-post-commit-analyzer.yml
@@ -41,7 +41,7 @@ jobs:
       LLVM_VERSION: 18
     steps:
       - name: Checkout Source
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
 
       - name: Setup ccache
         uses: hendrikmuhs/ccache-action@bfa03e1de4d7f7c3e80ad9109feedd05c4f5a716 # v1.2.19
diff --git a/.github/workflows/commit-access-greeter.yml b/.github/workflows/commit-access-greeter.yml
index f31cd015642e2..d11bdec6b2ea8 100644
--- a/.github/workflows/commit-access-greeter.yml
+++ b/.github/workflows/commit-access-greeter.yml
@@ -18,7 +18,7 @@ jobs:
       github.event.label.name == 'infra:commit-access-request'
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           sparse-checkout: llvm/utils/git/
 
diff --git a/.github/workflows/commit-access-review.yml b/.github/workflows/commit-access-review.yml
index 7cdcfca532990..f6ec0bc9d4a9a 100644
--- a/.github/workflows/commit-access-review.yml
+++ b/.github/workflows/commit-access-review.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Fetch LLVM sources
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
       
       - name: Install dependencies
         run: |
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 3eb146d21dc40..ef1b727dc00a8 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -55,7 +55,7 @@ jobs:
     if: github.repository == 'llvm/llvm-project'
     steps:
       - name: Fetch LLVM sources
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           fetch-depth: 2
       - name: Get subprojects that have doc changes
diff --git a/.github/workflows/email-check.yaml b/.github/workflows/email-check.yaml
index ba625b2b3b062..28cd2905d816d 100644
--- a/.github/workflows/email-check.yaml
+++ b/.github/workflows/email-check.yaml
@@ -14,7 +14,7 @@ jobs:
     if: github.repository == 'llvm/llvm-project'
     steps:
       - name: Fetch LLVM sources
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           ref: ${{ github.event.pull_request.head.sha }}
 
diff --git a/.github/workflows/gha-codeql.yml b/.github/workflows/gha-codeql.yml
index 689bdf408522b..9c6c23e34758c 100644
--- a/.github/workflows/gha-codeql.yml
+++ b/.github/workflows/gha-codeql.yml
@@ -24,7 +24,7 @@ jobs:
       security-events: write
     steps:
       - name: Checkout LLVM
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           sparse-checkout: |
             .github/
diff --git a/.github/workflows/hlsl-test-all.yaml b/.github/workflows/hlsl-test-all.yaml
index 6e5bfd5b870a3..cc4b52ae6a728 100644
--- a/.github/workflows/hlsl-test-all.yaml
+++ b/.github/workflows/hlsl-test-all.yaml
@@ -29,25 +29,25 @@ jobs:
     runs-on: ${{ inputs.SKU }}
     steps:
       - name: Checkout DXC
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           repository: Microsoft/DirectXShaderCompiler
           ref: main
           path: DXC
           submodules: true
       - name: Checkout LLVM
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           ref: ${{ inputs.LLVM-branch }}
           path: llvm-project
       - name: Checkout OffloadTest
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           repository: llvm/offload-test-suite
           ref: main
           path: OffloadTest
       - name: Checkout Golden Images
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           repository: llvm/offload-golden-images
           ref: main
diff --git a/.github/workflows/issue-release-workflow.yml b/.github/workflows/issue-release-workflow.yml
index 7fd0280b2eedf..9aa1276e10e92 100644
--- a/.github/workflows/issue-release-workflow.yml
+++ b/.github/workflows/issue-release-workflow.yml
@@ -42,7 +42,7 @@ jobs:
       contains(github.event.action == 'opened' && github.event.issue.body || github.event.comment.body, '/cherry-pick')
     steps:
       - name: Fetch LLVM sources
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           repository: llvm/llvm-project
           # GitHub stores the token used for checkout and uses it for pushes
diff --git a/.github/workflows/issue-subscriber.yml b/.github/workflows/issue-subscriber.yml
index afcd17c757b39..0006b982aeae6 100644
--- a/.github/workflows/issue-subscriber.yml
+++ b/.github/workflows/issue-subscriber.yml
@@ -14,7 +14,7 @@ jobs:
     if: github.repository == 'llvm/llvm-project'
     steps:
       - name: Checkout Automation Script
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           sparse-checkout: llvm/utils/git/
           ref: main
diff --git a/.github/workflows/issue-write.yml b/.github/workflows/issue-write.yml
index 4f8fd7a48aff6..ece6081ce9ba6 100644
--- a/.github/workflows/issue-write.yml
+++ b/.github/workflows/issue-write.yml
@@ -27,7 +27,7 @@ jobs:
       )
     steps:
       - name: Fetch Sources
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           sparse-checkout: |
             .github/workflows/unprivileged-download-artifact/action.yml
diff --git a/.github/workflows/libc-fullbuild-tests.yml b/.github/workflows/libc-fullbuild-tests.yml
index 01fd895cce7e8..13c0c2b82ab42 100644
--- a/.github/workflows/libc-fullbuild-tests.yml
+++ b/.github/workflows/libc-fullbuild-tests.yml
@@ -88,7 +88,7 @@ jobs:
           # - c_compiler: gcc
           #   cpp_compiler: g++
     steps:
-    - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+    - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
     
     # Libc's build is relatively small comparing with other components of LLVM.
     # A fresh fullbuild takes about 190MiB of uncompressed disk space, which can
diff --git a/.github/workflows/libc-overlay-tests.yml b/.github/workflows/libc-overlay-tests.yml
index df9a20dce8eae..29bcd0f600490 100644
--- a/.github/workflows/libc-overlay-tests.yml
+++ b/.github/workflows/libc-overlay-tests.yml
@@ -41,7 +41,7 @@ jobs:
               cpp_compiler: clang++
     
     steps:
-    - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+    - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
     
     # Libc's build is relatively small comparing with other components of LLVM.
     # A fresh linux overlay takes about 180MiB of uncompressed disk space, which can
diff --git a/.github/workflows/libclang-abi-tests.yml b/.github/workflows/libclang-abi-tests.yml
index 0d3f9fe3f69ea..b8be6a42e0fa8 100644
--- a/.github/workflows/libclang-abi-tests.yml
+++ b/.github/workflows/libclang-abi-tests.yml
@@ -38,7 +38,7 @@ jobs:
       LLVM_VERSION_PATCH: ${{ steps.version.outputs.patch }}
     steps:
       - name: Checkout source
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           fetch-depth: 250
 
@@ -102,7 +102,7 @@ jobs:
             repo: ${{ github.repository }}
     steps:
       - name: Download source code
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           ref: ${{ matrix.ref }}
           repository: ${{ matrix.repo }}
diff --git a/.github/workflows/libclang-python-tests.yml b/.github/workflows/libclang-python-tests.yml
index 0d66f5d595e0e..69d281b65b5fb 100644
--- a/.github/workflows/libclang-python-tests.yml
+++ b/.github/workflows/libclang-python-tests.yml
@@ -32,7 +32,7 @@ jobs:
       matrix:
         python-version: ["3.8", "3.13"]
     steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
       - name: Setup Python
         uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
diff --git a/.github/workflows/libcxx-build-and-test.yaml b/.github/workflows/libcxx-build-and-test.yaml
index 7dad30f994fd1..8e6dc48f4c495 100644
--- a/.github/workflows/libcxx-build-and-test.yaml
+++ b/.github/workflows/libcxx-build-and-test.yaml
@@ -54,7 +54,7 @@ jobs:
             cc: 'gcc-15'
             cxx: 'g++-15'
     steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
       - name: ${{ matrix.config }}.${{ matrix.cxx }}
         run: libcxx/utils/ci/run-buildbot ${{ matrix.config }}
         env:
@@ -99,7 +99,7 @@ jobs:
             cc: 'clang-20'
             cxx: 'clang++-20'
     steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
       - name: ${{ matrix.config }}
         run: libcxx/utils/ci/run-buildbot ${{ matrix.config }}
         env:
@@ -163,7 +163,7 @@ jobs:
           machine: llvm-premerge-libcxx-runners
     runs-on: ${{ matrix.machine }}
     steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
       - name: ${{ matrix.config }}
         run: libcxx/utils/ci/run-buildbot ${{ matrix.config }}
         env:
@@ -211,7 +211,7 @@ jobs:
           os: macos-15
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
       - uses: maxim-lobanov/setup-xcode@60606e260d2fc5762a71e64e74b2174e8ea3c8bd # v1.6.0
         with:
           # https://github.com/actions/runner-images/blob/main/images/macos/macos-15-Readme.md
@@ -253,7 +253,7 @@ jobs:
         - { config: mingw-static, mingw: true, runner: windows-11-arm }
     runs-on: ${{ matrix.runner != '' && matrix.runner || 'windows-2022' }}
     steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
       - name: Install dependencies
         run: |
           pip install psutil
diff --git a/.github/workflows/libcxx-build-containers.yml b/.github/workflows/libcxx-build-containers.yml
index eee7bb8913944..a49ad812606e8 100644
--- a/.github/workflows/libcxx-build-containers.yml
+++ b/.github/workflows/libcxx-build-containers.yml
@@ -30,7 +30,7 @@ jobs:
       packages: write
 
     steps:
-    - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+    - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
 
     # The default Docker storage location for GitHub Actions doesn't have
     # enough disk space, so change it to /mnt, which has more disk space.
diff --git a/.github/workflows/libcxx-check-generated-files.yml b/.github/workflows/libcxx-check-generated-files.yml
index ba97ccc64ba70..a25dc8b70001d 100644
--- a/.github/workflows/libcxx-check-generated-files.yml
+++ b/.github/workflows/libcxx-check-generated-files.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Fetch LLVM sources
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
 
       - name: Install dependencies
         uses: aminya/setup-cpp@9bc9b8cd8a8d678f920e4e1e73f29da8010ced51 # v1.7.2
diff --git a/.github/workflows/libcxx-run-benchmarks.yml b/.github/workflows/libcxx-run-benchmarks.yml
index e2ca940d2f0b3..64a902482f9a3 100644
--- a/.github/workflows/libcxx-run-benchmarks.yml
+++ b/.github/workflows/libcxx-run-benchmarks.yml
@@ -56,7 +56,7 @@ jobs:
           BENCHMARKS=$(echo "$COMMENT_BODY" | sed -nE 's/\/libcxx-bot benchmark (.+)/\1/p')
           echo "benchmarks=${BENCHMARKS}" >> ${GITHUB_OUTPUT}
 
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           ref: ${{ steps.vars.outputs.pr_head }}
           fetch-depth: 0
diff --git a/.github/workflows/llvm-abi-tests.yml b/.github/workflows/llvm-abi-tests.yml
index 7bd4a471bfd3a..4b0268b0ad9f2 100644
--- a/.github/workflows/llvm-abi-tests.yml
+++ b/.github/workflows/llvm-abi-tests.yml
@@ -38,7 +38,7 @@ jobs:
       LLVM_VERSION_PATCH: ${{ steps.version.outputs.patch }}
     steps:
       - name: Checkout source
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           fetch-depth: 250
 
@@ -90,7 +90,7 @@ jobs:
             repo: ${{ github.repository }}
     steps:
       - name: Download source code
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           ref: ${{ matrix.ref }}
           repository: ${{ matrix.repo }}
diff --git a/.github/workflows/merged-prs.yml b/.github/workflows/merged-prs.yml
index 107bbc51b5314..22786dc10b1ea 100644
--- a/.github/workflows/merged-prs.yml
+++ b/.github/workflows/merged-prs.yml
@@ -21,7 +21,7 @@ jobs:
       (github.event.pull_request.merged == true)
     steps:
       - name: Checkout Automation Script
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           sparse-checkout: llvm/utils/git/
           ref: main
diff --git a/.github/workflows/mlir-spirv-tests.yml b/.github/workflows/mlir-spirv-tests.yml
index 5bb16c739cdde..e9b0cddb391be 100644
--- a/.github/workflows/mlir-spirv-tests.yml
+++ b/.github/workflows/mlir-spirv-tests.yml
@@ -28,7 +28,7 @@ jobs:
     container:
       image: ghcr.io/llvm/ci-ubuntu-24.04:latest
     steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
       - name: Setup ccache
         uses: hendrikmuhs/ccache-action@bfa03e1de4d7f7c3e80ad9109feedd05c4f5a716 # v1.2.19
         with:
diff --git a/.github/workflows/new-prs.yml b/.github/workflows/new-prs.yml
index f5826728d2c7b..01032230c3883 100644
--- a/.github/workflows/new-prs.yml
+++ b/.github/workflows/new-prs.yml
@@ -34,7 +34,7 @@ jobs:
       (github.event.pull_request.author_association != 'OWNER')
     steps:
       - name: Checkout Automation Script
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           sparse-checkout: llvm/utils/git/
           ref: main
diff --git a/.github/workflows/pr-code-format.yml b/.github/workflows/pr-code-format.yml
index dc253e4fbae98..441f94960bc0a 100644
--- a/.github/workflows/pr-code-format.yml
+++ b/.github/workflows/pr-code-format.yml
@@ -21,7 +21,7 @@ jobs:
     if: github.repository == 'llvm/llvm-project'
     steps:
       - name: Fetch LLVM sources
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           fetch-depth: 2
 
diff --git a/.github/workflows/pr-code-lint.yml b/.github/workflows/pr-code-lint.yml
index 5444a29c22205..ea4f8217cd003 100644
--- a/.github/workflows/pr-code-lint.yml
+++ b/.github/workflows/pr-code-lint.yml
@@ -27,7 +27,7 @@ jobs:
       cancel-in-progress: true
     steps:
       - name: Fetch LLVM sources
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           fetch-depth: 2
       
diff --git a/.github/workflows/pr-request-release-note.yml b/.github/workflows/pr-request-release-note.yml
index c2dc2de65f133..ac80347d00ab4 100644
--- a/.github/workflows/pr-request-release-note.yml
+++ b/.github/workflows/pr-request-release-note.yml
@@ -19,7 +19,7 @@ jobs:
       # We need to pull the script from the main branch, so that we ensure
       # we get the latest version of this script.
       - name: Checkout Scripts
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           sparse-checkout: |
             llvm/utils/git/requirements.txt
diff --git a/.github/workflows/pr-subscriber.yml b/.github/workflows/pr-subscriber.yml
index 23c7a679185ee..eac93be196356 100644
--- a/.github/workflows/pr-subscriber.yml
+++ b/.github/workflows/pr-subscriber.yml
@@ -14,7 +14,7 @@ jobs:
     if: github.repository == 'llvm/llvm-project'
     steps:
       - name: Checkout Automation Script
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           sparse-checkout: llvm/utils/git/
           ref: main
diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index daf88b5b22125..252d7fbe8e67f 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -58,7 +58,7 @@ jobs:
         shell: bash
     steps:
       - name: Checkout LLVM
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           fetch-depth: 2
       - name: Build and Test
@@ -139,7 +139,7 @@ jobs:
         shell: bash
     steps:
       - name: Checkout LLVM
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           fetch-depth: 2
       - name: Compute Projects
@@ -196,7 +196,7 @@ jobs:
       (github.event_name != 'pull_request' || github.event.action != 'closed')
     steps:
       - name: Checkout LLVM
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           fetch-depth: 2
       - name: Setup ccache
diff --git a/.github/workflows/release-asset-audit.yml b/.github/workflows/release-asset-audit.yml
index b658167d1db36..66ea3537a9162 100644
--- a/.github/workflows/release-asset-audit.yml
+++ b/.github/workflows/release-asset-audit.yml
@@ -23,7 +23,7 @@ jobs:
     if: github.repository == 'llvm/llvm-project'
     steps:
       - name: Checkout LLVM
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           sparse-checkout: |
             .github/workflows/release-asset-audit.py
diff --git a/.github/workflows/release-binaries.yml b/.github/workflows/release-binaries.yml
index 64f371e9f8db8..104d37db8a28d 100644
--- a/.github/workflows/release-binaries.yml
+++ b/.github/workflows/release-binaries.yml
@@ -71,7 +71,7 @@ jobs:
         python-version: '3.14'
 
     - name: Checkout LLVM
-      uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
 
     - name: Install Dependencies
       shell: bash
@@ -184,7 +184,7 @@ jobs:
     steps:
 
     - name: Checkout LLVM
-      uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
       with:
         ref: ${{ needs.prepare.outputs.ref }}
 
@@ -246,7 +246,7 @@ jobs:
 
     steps:
     - name: Checkout Release Scripts
-      uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
       with:
         sparse-checkout: |
           llvm/utils/release/github-upload-release.py
diff --git a/.github/workflows/release-documentation.yml b/.github/workflows/release-documentation.yml
index c09ad57066711..23bc0aed4a546 100644
--- a/.github/workflows/release-documentation.yml
+++ b/.github/workflows/release-documentation.yml
@@ -38,7 +38,7 @@ jobs:
       upload: ${{ inputs.upload && !contains(inputs.release-version, 'rc') }}
     steps:
       - name: Checkout LLVM
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
 
       - name: Setup Python env
         uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
@@ -70,7 +70,7 @@ jobs:
 
       - name: Clone www-releases
         if: env.upload
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           repository: ${{ github.repository_owner }}/www-releases
           ref: main
diff --git a/.github/workflows/release-doxygen.yml b/.github/workflows/release-doxygen.yml
index c31319e47833d..6e6ea883ef1d0 100644
--- a/.github/workflows/release-doxygen.yml
+++ b/.github/workflows/release-doxygen.yml
@@ -40,7 +40,7 @@ jobs:
       upload: ${{ inputs.upload && !contains(inputs.release-version, 'rc') }}
     steps:
       - name: Checkout LLVM
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
 
       - name: Setup Python env
         uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
diff --git a/.github/workflows/release-lit.yml b/.github/workflows/release-lit.yml
index f2fd4a52328a7..e7a94572429d0 100644
--- a/.github/workflows/release-lit.yml
+++ b/.github/workflows/release-lit.yml
@@ -28,7 +28,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Checkout LLVM
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           ref: "llvmorg-${{ inputs.release-version }}"
 
diff --git a/.github/workflows/release-sources.yml b/.github/workflows/release-sources.yml
index 4c47bd7575d99..9b21d2adfd27a 100644
--- a/.github/workflows/release-sources.yml
+++ b/.github/workflows/release-sources.yml
@@ -71,7 +71,7 @@ jobs:
       attestations: write
     steps:
       - name: Checkout LLVM
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           ref: ${{ needs.inputs.outputs.ref }}
           fetch-tags: true
diff --git a/.github/workflows/release-tasks.yml b/.github/workflows/release-tasks.yml
index d4c2a55fcc9d7..199017a4a7b27 100644
--- a/.github/workflows/release-tasks.yml
+++ b/.github/workflows/release-tasks.yml
@@ -38,7 +38,7 @@ jobs:
           sudo apt-get install python3-github
 
       - name: Checkout LLVM
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
 
       - name: Create Release
         env:
@@ -132,7 +132,7 @@ jobs:
           sudo apt-get install python3-github
 
       - name: Checkout LLVM
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           sparse-checkout: llvm/utils/release/github-upload-release.py
           sparse-checkout-cone-mode: false
diff --git a/.github/workflows/scorecard.yml b/.github/workflows/scorecard.yml
index 597b6f0c0e0f0..4ce3df621bb76 100644
--- a/.github/workflows/scorecard.yml
+++ b/.github/workflows/scorecard.yml
@@ -31,7 +31,7 @@ jobs:
 
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           persist-credentials: false
 
diff --git a/.github/workflows/spirv-tests.yml b/.github/workflows/spirv-tests.yml
index 69374ae563306..5ede9df3b006d 100644
--- a/.github/workflows/spirv-tests.yml
+++ b/.github/workflows/spirv-tests.yml
@@ -24,7 +24,7 @@ jobs:
     container:
       image: ghcr.io/llvm/ci-ubuntu-24.04:latest
     steps:
-      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
       - name: Setup ccache
         uses: hendrikmuhs/ccache-action@bfa03e1de4d7f7c3e80ad9109feedd05c4f5a716 # v1.2.19
         with:
diff --git a/.github/workflows/test-unprivileged-download-artifact.yml b/.github/workflows/test-unprivileged-download-artifact.yml
index a9c0912b0f44e..39ac3d57a3879 100644
--- a/.github/workflows/test-unprivileged-download-artifact.yml
+++ b/.github/workflows/test-unprivileged-download-artifact.yml
@@ -38,7 +38,7 @@ jobs:
     needs: [ upload-test-artifact ]
     steps:
       - name: Chekcout LLVM
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           sparse-checkout: |
             .github/workflows/unprivileged-download-artifact/action.yml
diff --git a/.github/workflows/version-check.yml b/.github/workflows/version-check.yml
index 7e451880f4cfa..b3fc1f49db56a 100644
--- a/.github/workflows/version-check.yml
+++ b/.github/workflows/version-check.yml
@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Fetch LLVM sources
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           fetch-depth: 0