fix: github actions (#483)

fix: test unused

.github/workflows/ci-docs.yaml

@@ -9,6 +9,16 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
+        with:
+          ref: "refs/pull/${{ github.event.number }}/merge"
+      - name: Check for redundant workflow run
+        run: |
+          HEAD_SHA=$(git rev-parse HEAD^)
+          if [ "$HEAD_SHA" != "${{ github.event.pull_request.head.sha }}" ]; then
+            echo "HEAD SHA and Pull Request HEAD SHA do not match, cancelling run"
+            echo "GitHub has scheduled a newer workflow run already."
+            exit 1
+          fi
       - name: Setup Node.js
         uses: actions/setup-node@v3
         with: