diff --git a/.github/workflows/staging-deploy-pr.yml b/.github/workflows/staging-deploy-pr.yml
index a7e308615773..7b7b5f5da1a5 100644
--- a/.github/workflows/staging-deploy-pr.yml
+++ b/.github/workflows/staging-deploy-pr.yml
@@ -79,9 +79,18 @@ jobs:
                 name: prRepoName
               }
             } = run
-            const headLabel = `${prRepoOwner}:${headBranch}`
 
             const prIsInternal = owner === prRepoOwner && repo === prRepoName
+            let headLabel = `${prRepoOwner}:${headBranch}`
+
+            // If the PR is external, prefix its head branch name with the
+            // forked repo owner's login and their fork repo name e.g.
+            // "octocat/my-fork:docs".  We need to include the fork repo
+            // name as well to account for an API issue (this will work fine
+            // if they don't have a different fork repo name).
+            if (!prIsInternal) {
+              headLabel = `${prRepoOwner}/${prRepoName}:${headBranch}`
+            }
 
             // If the PR is external, prefix its head branch name with the
             // forked repo owner's login, e.g. "octocat:docs"
diff --git a/package-lock.json b/package-lock.json
index 6ef5ab1ab9dc..94990c7b34f7 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -138,7 +138,7 @@
         "eslint-plugin-promise": "^5.1.0",
         "event-to-promise": "^0.8.0",
         "glob": "^7.2.0",
-        "graphql": "^15.5.3",
+        "graphql": "^15.6.1",
         "heroku-client": "^3.1.0",
         "http-status-code": "^2.1.0",
         "husky": "^7.0.2",
@@ -161,7 +161,7 @@
         "npm-merge-driver-install": "^2.0.1",
         "object-hash": "^2.2.0",
         "postcss": "^8.3.6",
-        "prettier": "^2.4.0",
+        "prettier": "^2.4.1",
         "replace": "^1.2.1",
         "rimraf": "^3.0.2",
         "robots-parser": "^2.3.0",
@@ -11704,9 +11704,9 @@
       "integrity": "sha512-nTnJ528pbqxYanhpDYsi4Rd8MAeaBA67+RZ10CM1m3bTAVFEDcd5AuA4a6W5YkGZ1iNXHzZz8T6TBKLeBuNriQ=="
     },
     "node_modules/graphql": {
-      "version": "15.5.3",
-      "resolved": "https://registry.npmjs.org/graphql/-/graphql-15.5.3.tgz",
-      "integrity": "sha512-sM+jXaO5KinTui6lbK/7b7H/Knj9BpjGxZ+Ki35v7YbUJxxdBCUqNM0h3CRVU1ZF9t5lNiBzvBCSYPvIwxPOQA==",
+      "version": "15.6.1",
+      "resolved": "https://registry.npmjs.org/graphql/-/graphql-15.6.1.tgz",
+      "integrity": "sha512-3i5lu0z6dRvJ48QP9kFxBkJ7h4Kso7PS8eahyTFz5Jm6CvQfLtNIE8LX9N6JLnXTuwR+sIYnXzaWp6anOg0QQw==",
       "dev": true,
       "engines": {
         "node": ">= 10.x"
@@ -19783,9 +19783,9 @@
       }
     },
     "node_modules/prettier": {
-      "version": "2.4.0",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-2.4.0.tgz",
-      "integrity": "sha512-DsEPLY1dE5HF3BxCRBmD4uYZ+5DCbvatnolqTqcxEgKVZnL2kUfyu7b8pPQ5+hTBkdhU9SLUmK0/pHb07RE4WQ==",
+      "version": "2.4.1",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-2.4.1.tgz",
+      "integrity": "sha512-9fbDAXSBcc6Bs1mZrDYb3XKzDLm4EXXL9sC1LqKP5rZkT6KRr/rf9amVUcODVXgguK/isJz0d0hP72WeaKWsvA==",
       "dev": true,
       "bin": {
         "prettier": "bin-prettier.js"
@@ -34916,9 +34916,9 @@
       "integrity": "sha512-nTnJ528pbqxYanhpDYsi4Rd8MAeaBA67+RZ10CM1m3bTAVFEDcd5AuA4a6W5YkGZ1iNXHzZz8T6TBKLeBuNriQ=="
     },
     "graphql": {
-      "version": "15.5.3",
-      "resolved": "https://registry.npmjs.org/graphql/-/graphql-15.5.3.tgz",
-      "integrity": "sha512-sM+jXaO5KinTui6lbK/7b7H/Knj9BpjGxZ+Ki35v7YbUJxxdBCUqNM0h3CRVU1ZF9t5lNiBzvBCSYPvIwxPOQA==",
+      "version": "15.6.1",
+      "resolved": "https://registry.npmjs.org/graphql/-/graphql-15.6.1.tgz",
+      "integrity": "sha512-3i5lu0z6dRvJ48QP9kFxBkJ7h4Kso7PS8eahyTFz5Jm6CvQfLtNIE8LX9N6JLnXTuwR+sIYnXzaWp6anOg0QQw==",
       "dev": true
     },
     "gray-matter": {
@@ -41080,9 +41080,9 @@
       "dev": true
     },
     "prettier": {
-      "version": "2.4.0",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-2.4.0.tgz",
-      "integrity": "sha512-DsEPLY1dE5HF3BxCRBmD4uYZ+5DCbvatnolqTqcxEgKVZnL2kUfyu7b8pPQ5+hTBkdhU9SLUmK0/pHb07RE4WQ==",
+      "version": "2.4.1",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-2.4.1.tgz",
+      "integrity": "sha512-9fbDAXSBcc6Bs1mZrDYb3XKzDLm4EXXL9sC1LqKP5rZkT6KRr/rf9amVUcODVXgguK/isJz0d0hP72WeaKWsvA==",
       "dev": true
     },
     "pretty-format": {
diff --git a/package.json b/package.json
index 1e8fb3c3a2a2..ed9ba37ad42a 100644
--- a/package.json
+++ b/package.json
@@ -140,7 +140,7 @@
     "eslint-plugin-promise": "^5.1.0",
     "event-to-promise": "^0.8.0",
     "glob": "^7.2.0",
-    "graphql": "^15.5.3",
+    "graphql": "^15.6.1",
     "heroku-client": "^3.1.0",
     "http-status-code": "^2.1.0",
     "husky": "^7.0.2",
@@ -163,7 +163,7 @@
     "npm-merge-driver-install": "^2.0.1",
     "object-hash": "^2.2.0",
     "postcss": "^8.3.6",
-    "prettier": "^2.4.0",
+    "prettier": "^2.4.1",
     "replace": "^1.2.1",
     "rimraf": "^3.0.2",
     "robots-parser": "^2.3.0",