diff --git a/.github/workflows/run_tests_on_modified_meta_with_secrets.yml b/.github/workflows/run_tests_on_modified_meta_with_secrets.yml
index 8c8f84506..61605d52c 100644
--- a/.github/workflows/run_tests_on_modified_meta_with_secrets.yml
+++ b/.github/workflows/run_tests_on_modified_meta_with_secrets.yml
@@ -59,8 +59,12 @@ jobs:
           echo "RCLONE_CONFIG_MLC_NUSCENES_SERVICE_ACCOUNT_CREDENTIALS=${{ steps.op-load-secrets.outputs.GDRIVE_SERVICE_ACCOUNT_KEY }}" >> $GITHUB_ENV
         
       - name: Process meta.yaml file
+        shell: bash
+        env:
+          HEAD_REF: ${{ github.event.pull_request.head.ref }}
+          HEAD_REPO_URL: ${{ github.event.pull_request.head.repo.html_url }}
         run: |
           echo "Processing ${{ matrix.file_info.file }} (run #${{ matrix.file_info.num_run }})"
           pip install mlcflow
-          mlc pull repo ${{ github.event.pull_request.head.repo.html_url }} --branch=${{ github.event.pull_request.head.ref }}
-          mlc test script ${{ matrix.file_info.uid }} --test_input_index=${{ matrix.file_info.num_run }} --docker_mlc_repo=${{ github.event.pull_request.head.repo.html_url }} --docker_mlc_repo_branch=${{ github.event.pull_request.head.ref }} --quiet
+          mlc pull repo "$HEAD_REPO_URL" --branch="$HEAD_REF"
+          mlc test script ${{ matrix.file_info.uid }} --test_input_index=${{ matrix.file_info.num_run }} --docker_mlc_repo="$HEAD_REPO_URL" --docker_mlc_repo_branch="$HEAD_REF" --quiet