diff --git a/.github/actions/lib/action-context.js b/.github/actions/lib/action-context.js
index 137abec732c3..5eadd2f2000c 100644
--- a/.github/actions/lib/action-context.js
+++ b/.github/actions/lib/action-context.js
@@ -2,6 +2,9 @@ import { readFileSync } from 'fs'
 
 // Parses the action event payload sets repo and owner to an object from runner environment
 export function getActionContext() {
+  if (!process.env.GITHUB_EVENT_PATH) {
+    throw new Error('process.env.GITHUB_EVENT_PATH is not set')
+  }
   const context = JSON.parse(readFileSync(process.env.GITHUB_EVENT_PATH, 'utf8'))
   if (context.repository) {
     context.owner = context.repository.owner.login
diff --git a/lib/rest/static/decorated/api.github.com.json b/lib/rest/static/decorated/api.github.com.json
index 890c082f170c..978c66c06c37 100644
--- a/lib/rest/static/decorated/api.github.com.json
+++ b/lib/rest/static/decorated/api.github.com.json
@@ -362130,10 +362130,28 @@
             ]
           },
           {
-            "type": "",
+            "type": "object",
             "name": "source",
             "in": "body",
-            "description": ""
+            "description": "<p>Update the source for the repository. Must include the branch name and path.</p>",
+            "childParamsGroups": [
+              {
+                "type": "string",
+                "name": "branch",
+                "description": "<p>The repository branch used to publish your site's source files.</p>",
+                "isRequired": true
+              },
+              {
+                "type": "string",
+                "name": "path",
+                "description": "<p>The repository directory that includes the source files for the Pages site. Allowed paths are <code>/</code> or <code>/docs</code>.</p>",
+                "isRequired": true,
+                "enum": [
+                  "/",
+                  "/docs"
+                ]
+              }
+            ]
           }
         ],
         "enabledForGitHubApps": true,
diff --git a/lib/rest/static/decorated/ghec.json b/lib/rest/static/decorated/ghec.json
index 18045695569a..92ce8de2f37b 100644
--- a/lib/rest/static/decorated/ghec.json
+++ b/lib/rest/static/decorated/ghec.json
@@ -364090,10 +364090,28 @@
             ]
           },
           {
-            "type": "",
+            "type": "object",
             "name": "source",
             "in": "body",
-            "description": ""
+            "description": "<p>Update the source for the repository. Must include the branch name and path.</p>",
+            "childParamsGroups": [
+              {
+                "type": "string",
+                "name": "branch",
+                "description": "<p>The repository branch used to publish your site's source files.</p>",
+                "isRequired": true
+              },
+              {
+                "type": "string",
+                "name": "path",
+                "description": "<p>The repository directory that includes the source files for the Pages site. Allowed paths are <code>/</code> or <code>/docs</code>.</p>",
+                "isRequired": true,
+                "enum": [
+                  "/",
+                  "/docs"
+                ]
+              }
+            ]
           }
         ],
         "enabledForGitHubApps": true,
diff --git a/lib/rest/static/decorated/ghes-3.3.json b/lib/rest/static/decorated/ghes-3.3.json
index b1cbc6386551..8e3eea61f44e 100644
--- a/lib/rest/static/decorated/ghes-3.3.json
+++ b/lib/rest/static/decorated/ghes-3.3.json
@@ -284466,10 +284466,28 @@
             ]
           },
           {
-            "type": "",
+            "type": "object",
             "name": "source",
             "in": "body",
-            "description": ""
+            "description": "<p>Update the source for the repository. Must include the branch name and path.</p>",
+            "childParamsGroups": [
+              {
+                "type": "string",
+                "name": "branch",
+                "description": "<p>The repository branch used to publish your site's source files.</p>",
+                "isRequired": true
+              },
+              {
+                "type": "string",
+                "name": "path",
+                "description": "<p>The repository directory that includes the source files for the Pages site. Allowed paths are <code>/</code> or <code>/docs</code>.</p>",
+                "isRequired": true,
+                "enum": [
+                  "/",
+                  "/docs"
+                ]
+              }
+            ]
           }
         ],
         "enabledForGitHubApps": true,
diff --git a/lib/rest/static/decorated/ghes-3.4.json b/lib/rest/static/decorated/ghes-3.4.json
index 712559043e1f..326cb90f95b4 100644
--- a/lib/rest/static/decorated/ghes-3.4.json
+++ b/lib/rest/static/decorated/ghes-3.4.json
@@ -302677,10 +302677,28 @@
             ]
           },
           {
-            "type": "",
+            "type": "object",
             "name": "source",
             "in": "body",
-            "description": ""
+            "description": "<p>Update the source for the repository. Must include the branch name and path.</p>",
+            "childParamsGroups": [
+              {
+                "type": "string",
+                "name": "branch",
+                "description": "<p>The repository branch used to publish your site's source files.</p>",
+                "isRequired": true
+              },
+              {
+                "type": "string",
+                "name": "path",
+                "description": "<p>The repository directory that includes the source files for the Pages site. Allowed paths are <code>/</code> or <code>/docs</code>.</p>",
+                "isRequired": true,
+                "enum": [
+                  "/",
+                  "/docs"
+                ]
+              }
+            ]
           }
         ],
         "enabledForGitHubApps": true,
diff --git a/lib/rest/static/decorated/ghes-3.5.json b/lib/rest/static/decorated/ghes-3.5.json
index 4321e849140a..c08ab28f931c 100644
--- a/lib/rest/static/decorated/ghes-3.5.json
+++ b/lib/rest/static/decorated/ghes-3.5.json
@@ -309839,10 +309839,28 @@
             ]
           },
           {
-            "type": "",
+            "type": "object",
             "name": "source",
             "in": "body",
-            "description": ""
+            "description": "<p>Update the source for the repository. Must include the branch name and path.</p>",
+            "childParamsGroups": [
+              {
+                "type": "string",
+                "name": "branch",
+                "description": "<p>The repository branch used to publish your site's source files.</p>",
+                "isRequired": true
+              },
+              {
+                "type": "string",
+                "name": "path",
+                "description": "<p>The repository directory that includes the source files for the Pages site. Allowed paths are <code>/</code> or <code>/docs</code>.</p>",
+                "isRequired": true,
+                "enum": [
+                  "/",
+                  "/docs"
+                ]
+              }
+            ]
           }
         ],
         "enabledForGitHubApps": true,
diff --git a/lib/rest/static/decorated/ghes-3.6.json b/lib/rest/static/decorated/ghes-3.6.json
index c4ba25c849df..669faec2bcde 100644
--- a/lib/rest/static/decorated/ghes-3.6.json
+++ b/lib/rest/static/decorated/ghes-3.6.json
@@ -319190,10 +319190,28 @@
             ]
           },
           {
-            "type": "",
+            "type": "object",
             "name": "source",
             "in": "body",
-            "description": ""
+            "description": "<p>Update the source for the repository. Must include the branch name and path.</p>",
+            "childParamsGroups": [
+              {
+                "type": "string",
+                "name": "branch",
+                "description": "<p>The repository branch used to publish your site's source files.</p>",
+                "isRequired": true
+              },
+              {
+                "type": "string",
+                "name": "path",
+                "description": "<p>The repository directory that includes the source files for the Pages site. Allowed paths are <code>/</code> or <code>/docs</code>.</p>",
+                "isRequired": true,
+                "enum": [
+                  "/",
+                  "/docs"
+                ]
+              }
+            ]
           }
         ],
         "enabledForGitHubApps": true,
diff --git a/lib/rest/static/decorated/ghes-3.7.json b/lib/rest/static/decorated/ghes-3.7.json
index f340b7e9940e..85a638f55919 100644
--- a/lib/rest/static/decorated/ghes-3.7.json
+++ b/lib/rest/static/decorated/ghes-3.7.json
@@ -322640,10 +322640,28 @@
             ]
           },
           {
-            "type": "",
+            "type": "object",
             "name": "source",
             "in": "body",
-            "description": ""
+            "description": "<p>Update the source for the repository. Must include the branch name and path.</p>",
+            "childParamsGroups": [
+              {
+                "type": "string",
+                "name": "branch",
+                "description": "<p>The repository branch used to publish your site's source files.</p>",
+                "isRequired": true
+              },
+              {
+                "type": "string",
+                "name": "path",
+                "description": "<p>The repository directory that includes the source files for the Pages site. Allowed paths are <code>/</code> or <code>/docs</code>.</p>",
+                "isRequired": true,
+                "enum": [
+                  "/",
+                  "/docs"
+                ]
+              }
+            ]
           }
         ],
         "enabledForGitHubApps": true,
diff --git a/lib/rest/static/decorated/github.ae.json b/lib/rest/static/decorated/github.ae.json
index bf6de8f81325..957670958c74 100644
--- a/lib/rest/static/decorated/github.ae.json
+++ b/lib/rest/static/decorated/github.ae.json
@@ -261820,10 +261820,28 @@
             ]
           },
           {
-            "type": "",
+            "type": "object",
             "name": "source",
             "in": "body",
-            "description": ""
+            "description": "<p>Update the source for the repository. Must include the branch name and path.</p>",
+            "childParamsGroups": [
+              {
+                "type": "string",
+                "name": "branch",
+                "description": "<p>The repository branch used to publish your site's source files.</p>",
+                "isRequired": true
+              },
+              {
+                "type": "string",
+                "name": "path",
+                "description": "<p>The repository directory that includes the source files for the Pages site. Allowed paths are <code>/</code> or <code>/docs</code>.</p>",
+                "isRequired": true,
+                "enum": [
+                  "/",
+                  "/docs"
+                ]
+              }
+            ]
           }
         ],
         "enabledForGitHubApps": true,
diff --git a/package-lock.json b/package-lock.json
index 9d231e732955..897fc694e4c2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3481,6 +3481,201 @@
       "resolved": "https://registry.npmjs.org/@next/env/-/env-12.2.4.tgz",
       "integrity": "sha512-/gApFXWk5CCLFQJL5IYJXxPQuG5tz5nPX4l27A9Zm/+wJxiwFrRSP54AopDxIv4JRp/rGwcgk/lZS/0Clw8jYA=="
     },
+    "node_modules/@next/swc-android-arm-eabi": {
+      "version": "12.2.4",
+      "resolved": "https://registry.npmjs.org/@next/swc-android-arm-eabi/-/swc-android-arm-eabi-12.2.4.tgz",
+      "integrity": "sha512-P4YSFNpmXXSnn3P1qsOAqz+MX3On9fHrlc8ovb/CFJJoU+YLCR53iCEwfw39e0IZEgDA7ttgr108plF8mxaX0g==",
+      "cpu": [
+        "arm"
+      ],
+      "optional": true,
+      "os": [
+        "android"
+      ],
+      "engines": {
+        "node": ">= 10"
+      }
+    },
+    "node_modules/@next/swc-android-arm64": {
+      "version": "12.2.4",
+      "resolved": "https://registry.npmjs.org/@next/swc-android-arm64/-/swc-android-arm64-12.2.4.tgz",
+      "integrity": "sha512-4o2n14E18O+8xHlf6dgJsWPXN9gmSmfIe2Z0EqKDIPBBkFt/2CyrH0+vwHnL2l7xkDHhOGfZYcYIWVUR5aNu0A==",
+      "cpu": [
+        "arm64"
+      ],
+      "optional": true,
+      "os": [
+        "android"
+      ],
+      "engines": {
+        "node": ">= 10"
+      }
+    },
+    "node_modules/@next/swc-darwin-arm64": {
+      "version": "12.2.4",
+      "resolved": "https://registry.npmjs.org/@next/swc-darwin-arm64/-/swc-darwin-arm64-12.2.4.tgz",
+      "integrity": "sha512-DcUO6MGBL9E3jj5o86MUnTOy4WawIJJhyCcFYO4f51sbl7+uPIYIx40eo98A6NwJEXazCqq1hLeqOaNTAIvDiQ==",
+      "cpu": [
+        "arm64"
+      ],
+      "optional": true,
+      "os": [
+        "darwin"
+      ],
+      "engines": {
+        "node": ">= 10"
+      }
+    },
+    "node_modules/@next/swc-darwin-x64": {
+      "version": "12.2.4",
+      "resolved": "https://registry.npmjs.org/@next/swc-darwin-x64/-/swc-darwin-x64-12.2.4.tgz",
+      "integrity": "sha512-IUlFMqeLjdIzDorrGC2Dt+2Ae3DbKQbRzCzmDq4/CP1+jJGeDXo/2AHnlE+WYnwQAC4KtAz6pbVnd3KstZWsVA==",
+      "cpu": [
+        "x64"
+      ],
+      "optional": true,
+      "os": [
+        "darwin"
+      ],
+      "engines": {
+        "node": ">= 10"
+      }
+    },
+    "node_modules/@next/swc-freebsd-x64": {
+      "version": "12.2.4",
+      "resolved": "https://registry.npmjs.org/@next/swc-freebsd-x64/-/swc-freebsd-x64-12.2.4.tgz",
+      "integrity": "sha512-475vwyWcjnyDVDWLgAATP0HI8W1rwByc+uXk1B6KkAVFhkoDgH387LW0uNqxavK+VxCzj3avQXX/58XDvxtSlg==",
+      "cpu": [
+        "x64"
+      ],
+      "optional": true,
+      "os": [
+        "freebsd"
+      ],
+      "engines": {
+        "node": ">= 10"
+      }
+    },
+    "node_modules/@next/swc-linux-arm-gnueabihf": {
+      "version": "12.2.4",
+      "resolved": "https://registry.npmjs.org/@next/swc-linux-arm-gnueabihf/-/swc-linux-arm-gnueabihf-12.2.4.tgz",
+      "integrity": "sha512-qZW+L3iG3XSGtlOPmD5RRWXyk6ZNdscLV0BQjuDvP+exTg+uixqHXOHz0/GVATIJEBQOF0Kew7jAXVXEP+iRTQ==",
+      "cpu": [
+        "arm"
+      ],
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "engines": {
+        "node": ">= 10"
+      }
+    },
+    "node_modules/@next/swc-linux-arm64-gnu": {
+      "version": "12.2.4",
+      "resolved": "https://registry.npmjs.org/@next/swc-linux-arm64-gnu/-/swc-linux-arm64-gnu-12.2.4.tgz",
+      "integrity": "sha512-fEPRjItWYaKyyG9N+2HIA59OBHIhk7WC+Rh+LwXsh0pQe870Ykpek3KQs0umjsrEGe57NyMomq3f80/N8taDvA==",
+      "cpu": [
+        "arm64"
+      ],
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "engines": {
+        "node": ">= 10"
+      }
+    },
+    "node_modules/@next/swc-linux-arm64-musl": {
+      "version": "12.2.4",
+      "resolved": "https://registry.npmjs.org/@next/swc-linux-arm64-musl/-/swc-linux-arm64-musl-12.2.4.tgz",
+      "integrity": "sha512-rnCTzXII0EBCcFn9P5s/Dho2kPUMSX/bP0iOAj8wEI/IxUEfEElbin89zJoNW30cycHu19xY8YP4K2+hzciPzQ==",
+      "cpu": [
+        "arm64"
+      ],
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "engines": {
+        "node": ">= 10"
+      }
+    },
+    "node_modules/@next/swc-linux-x64-gnu": {
+      "version": "12.2.4",
+      "resolved": "https://registry.npmjs.org/@next/swc-linux-x64-gnu/-/swc-linux-x64-gnu-12.2.4.tgz",
+      "integrity": "sha512-PhXX6NSuIuhHInxPY2VkG2Bl7VllsD3Cjx+pQcS1wTym7Zt7UoLvn05PkRrkiyIkvR+UXnqPUM3TYiSbnemXEw==",
+      "cpu": [
+        "x64"
+      ],
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "engines": {
+        "node": ">= 10"
+      }
+    },
+    "node_modules/@next/swc-linux-x64-musl": {
+      "version": "12.2.4",
+      "resolved": "https://registry.npmjs.org/@next/swc-linux-x64-musl/-/swc-linux-x64-musl-12.2.4.tgz",
+      "integrity": "sha512-GmC/QROiUZpFirHRfPQqMyCXZ+5+ndbBZrMvL74HtQB/CKXB8K1VM+rvy9Gp/5OaU8Rxp48IcX79NOfI2LiXlA==",
+      "cpu": [
+        "x64"
+      ],
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "engines": {
+        "node": ">= 10"
+      }
+    },
+    "node_modules/@next/swc-win32-arm64-msvc": {
+      "version": "12.2.4",
+      "resolved": "https://registry.npmjs.org/@next/swc-win32-arm64-msvc/-/swc-win32-arm64-msvc-12.2.4.tgz",
+      "integrity": "sha512-9XKoCXbNZuaMRPtcKQz3+hgVpkMosaLlcxHFXT8/j4w61k7/qvEbrkMDS9WHNrD/xVcLycwhPRgXcns2K1BdBQ==",
+      "cpu": [
+        "arm64"
+      ],
+      "optional": true,
+      "os": [
+        "win32"
+      ],
+      "engines": {
+        "node": ">= 10"
+      }
+    },
+    "node_modules/@next/swc-win32-ia32-msvc": {
+      "version": "12.2.4",
+      "resolved": "https://registry.npmjs.org/@next/swc-win32-ia32-msvc/-/swc-win32-ia32-msvc-12.2.4.tgz",
+      "integrity": "sha512-hEyRieZKH9iw4AzvXaQ+Fyb98k0G/o9QcRGxA1/O/O/elf1+Qvuwb15phT8GbVtIeNziy66XTPOhKKfdr8KyUg==",
+      "cpu": [
+        "ia32"
+      ],
+      "optional": true,
+      "os": [
+        "win32"
+      ],
+      "engines": {
+        "node": ">= 10"
+      }
+    },
+    "node_modules/@next/swc-win32-x64-msvc": {
+      "version": "12.2.4",
+      "resolved": "https://registry.npmjs.org/@next/swc-win32-x64-msvc/-/swc-win32-x64-msvc-12.2.4.tgz",
+      "integrity": "sha512-5Pl1tdMJWLy4rvzU1ecx0nHWgDPqoYuvYoXE/5X0Clu9si/yOuBIj573F2kOTY7mu0LX2wgCJVSnyK0abHBxIw==",
+      "cpu": [
+        "x64"
+      ],
+      "optional": true,
+      "os": [
+        "win32"
+      ],
+      "engines": {
+        "node": ">= 10"
+      }
+    },
     "node_modules/@nodelib/fs.scandir": {
       "version": "2.1.5",
       "resolved": "https://registry.npmjs.org/@nodelib/fs.scandir/-/fs.scandir-2.1.5.tgz",
@@ -22956,6 +23151,84 @@
       "resolved": "https://registry.npmjs.org/@next/env/-/env-12.2.4.tgz",
       "integrity": "sha512-/gApFXWk5CCLFQJL5IYJXxPQuG5tz5nPX4l27A9Zm/+wJxiwFrRSP54AopDxIv4JRp/rGwcgk/lZS/0Clw8jYA=="
     },
+    "@next/swc-android-arm-eabi": {
+      "version": "12.2.4",
+      "resolved": "https://registry.npmjs.org/@next/swc-android-arm-eabi/-/swc-android-arm-eabi-12.2.4.tgz",
+      "integrity": "sha512-P4YSFNpmXXSnn3P1qsOAqz+MX3On9fHrlc8ovb/CFJJoU+YLCR53iCEwfw39e0IZEgDA7ttgr108plF8mxaX0g==",
+      "optional": true
+    },
+    "@next/swc-android-arm64": {
+      "version": "12.2.4",
+      "resolved": "https://registry.npmjs.org/@next/swc-android-arm64/-/swc-android-arm64-12.2.4.tgz",
+      "integrity": "sha512-4o2n14E18O+8xHlf6dgJsWPXN9gmSmfIe2Z0EqKDIPBBkFt/2CyrH0+vwHnL2l7xkDHhOGfZYcYIWVUR5aNu0A==",
+      "optional": true
+    },
+    "@next/swc-darwin-arm64": {
+      "version": "12.2.4",
+      "resolved": "https://registry.npmjs.org/@next/swc-darwin-arm64/-/swc-darwin-arm64-12.2.4.tgz",
+      "integrity": "sha512-DcUO6MGBL9E3jj5o86MUnTOy4WawIJJhyCcFYO4f51sbl7+uPIYIx40eo98A6NwJEXazCqq1hLeqOaNTAIvDiQ==",
+      "optional": true
+    },
+    "@next/swc-darwin-x64": {
+      "version": "12.2.4",
+      "resolved": "https://registry.npmjs.org/@next/swc-darwin-x64/-/swc-darwin-x64-12.2.4.tgz",
+      "integrity": "sha512-IUlFMqeLjdIzDorrGC2Dt+2Ae3DbKQbRzCzmDq4/CP1+jJGeDXo/2AHnlE+WYnwQAC4KtAz6pbVnd3KstZWsVA==",
+      "optional": true
+    },
+    "@next/swc-freebsd-x64": {
+      "version": "12.2.4",
+      "resolved": "https://registry.npmjs.org/@next/swc-freebsd-x64/-/swc-freebsd-x64-12.2.4.tgz",
+      "integrity": "sha512-475vwyWcjnyDVDWLgAATP0HI8W1rwByc+uXk1B6KkAVFhkoDgH387LW0uNqxavK+VxCzj3avQXX/58XDvxtSlg==",
+      "optional": true
+    },
+    "@next/swc-linux-arm-gnueabihf": {
+      "version": "12.2.4",
+      "resolved": "https://registry.npmjs.org/@next/swc-linux-arm-gnueabihf/-/swc-linux-arm-gnueabihf-12.2.4.tgz",
+      "integrity": "sha512-qZW+L3iG3XSGtlOPmD5RRWXyk6ZNdscLV0BQjuDvP+exTg+uixqHXOHz0/GVATIJEBQOF0Kew7jAXVXEP+iRTQ==",
+      "optional": true
+    },
+    "@next/swc-linux-arm64-gnu": {
+      "version": "12.2.4",
+      "resolved": "https://registry.npmjs.org/@next/swc-linux-arm64-gnu/-/swc-linux-arm64-gnu-12.2.4.tgz",
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+      "optional": true
+    },
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     "@nodelib/fs.scandir": {
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diff --git a/script/rest/utils/get-body-params.js b/script/rest/utils/get-body-params.js
index 922e13618a94..1abaee7569a4 100644
--- a/script/rest/utils/get-body-params.js
+++ b/script/rest/utils/get-body-params.js
@@ -47,7 +47,6 @@ export async function getBodyParams(schema, topLevel = false) {
 
   for (const [paramKey, param] of Object.entries(properties)) {
     const paramDecorated = {}
-
     // OpenAPI 3.0 only had a single value for `type`. OpenAPI 3.1
     // will either be a single value or an array of values.
     // This makes type an array regardless of how many values the array
@@ -120,6 +119,26 @@ export async function getBodyParams(schema, topLevel = false) {
       // is in the first child parameter.
       const oneOfDescriptions = descriptions.length ? descriptions[0].description : ''
       if (!param.description) param.description = oneOfDescriptions
+
+      // This is a workaround for an operation that incorrectly defines allOf for a
+      // body parameter. As a workaround, we will use the first object in the list of
+      // the allOf array. Otherwise, fallback to the first item in the array.
+      // This isn't ideal, and in the case of an actual allOf occurrence, we should
+      // handle it differently by merging all of the properties. There is currently
+      // only one occurrence for the operation id repos/update-information-about-pages-site
+      // See Ecosystem API issue number #3332 for future plans to fix this in the OpenAPI
+    } else if (param && param.anyOf && Object.keys(param).length === 1) {
+      const firstObject = Object.values(param.anyOf).find((item) => item.type === 'object')
+      if (firstObject) {
+        paramType.push('object')
+        param.description = firstObject.description
+        param.isRequired = firstObject.required
+        childParamsGroups.push(...(await getBodyParams(firstObject, false)))
+      } else {
+        paramType.push(param.anyOf[0].type)
+        param.description = param.anyOf[0].description
+        param.isRequired = param.anyOf[0].required
+      }
     }
 
     // Supports backwards compatibility for OpenAPI 3.0