Use the head sha on the PR for the check runs

Author: rvermeulen

.github/workflows/validate-release.yml

@@ -10,6 +10,9 @@ permissions:
   actions: write
   checks: write
 
+env:
+  HEAD_SHA: ${{ github.event.pull_request.head.sha }}
+
 jobs:
 
   pre-validate-performance:
@@ -26,7 +29,7 @@ jobs:
           --header "Accept: application/vnd.github+json" \
           --header "X-GitHub-Api-Version: 2022-11-28" \
           --field name="performance-test" \
-          --field head_sha="$GITHUB_REF" \
+          --field head_sha="$HEAD_SHA" \
           --jq ".id" \
           /repos/$GITHUB_REPOSITORY/check-runs)
 
@@ -42,7 +45,7 @@ jobs:
           GH_TOKEN: ${{ secrets.RELEASE_ENGINEERING_TOKEN }}
         run: |
           jq -n \
-          --arg ref "$GITHUB_REF" \
+          --arg ref "$HEAD_SHA" \
           --arg check_run_id "$CHECK_RUN_ID" \
           '{ref: $ref, "check-run-id": $check_run_id}' \
           | \
@@ -87,7 +90,7 @@ jobs:
           --header "Accept: application/vnd.github+json" \
           --header "X-GitHub-Api-Version: 2022-11-28" \
           --field name="compiler-compatibility-test" \
-          --field head_sha="$GITHUB_REF" \
+          --field head_sha="$HEAD_SHA" \
           --jq ".id" \
           /repos/$GITHUB_REPOSITORY/check-runs)
 
@@ -103,7 +106,7 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.RELEASE_ENGINEERING_TOKEN }}
         run: |
           jq -n \
-          --arg ref "$GITHUB_REF" \
+          --arg ref "$HEAD_SHA" \
           --arg check_run_id "$CHECK_RUN_ID" \
           '{ref: $ref, "check-run-id": $check_run_id}' \
           | \
@@ -146,7 +149,7 @@ jobs:
           --header "Accept: application/vnd.github+json" \
           --header "X-GitHub-Api-Version: 2022-11-28" \
           --field name="release-status" \
-          --field head_sha="$GITHUB_SHA" \
+          --field head_sha="$HEAD_SHA" \
           --field status="in_progress" \
           --jq ".id" \
           /repos/$GITHUB_REPOSITORY/check-runs)