try something else

.github/workflows/ccip-integration-test.yml

@@ -32,10 +32,20 @@ jobs:
           cd ccip
           git fetch
           git checkout ccip-develop
+      - name: Get the correct commit SHA via GitHub API
+        id: get_sha
+        run: |
+          if [ "${{ github.event_name }}" == "pull_request" ]; then
+            COMMIT_SHA=${{ github.event.pull_request.head.sha }}
+          else
+            COMMIT_SHA=$(curl -s -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" \
+              "https://api.github.com/repos/${{ github.repository }}/commits/${{ github.ref }}" | jq -r .sha)
+          fi
+          echo "::set-output name=sha::$COMMIT_SHA"
       - name: Update chainlink-ccip dependency in ccip
         run: |
           cd ccip
-          go get github.com/smartcontractkit/chainlink-ccip@${{ github.event.pull_request.head.sha }}
+          go get github.com/smartcontractkit/chainlink-ccip@${{ steps.get_sha.outputs.sha }}
           make gomodtidy
       - name: Setup Postgres
         uses: ./.github/actions/setup-postgres