Fix core ref workflow integration tests override (#325)

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

@@ -42,13 +42,20 @@ jobs:
       - name: Get the chainlink commit sha from PR description, if applicable
         id: get_chainlink_sha
         run: |
+          default="develop"
           if [ "${{ github.event_name }}" == "pull_request" ]; then
-            comment=$(echo "${{ steps.fetch_pr_data.outputs.result }}" | tr -d '"')
+            comment='${{ steps.fetch_pr_data.outputs.result }}'
             echo $comment
-            core_ref="$(echo "$comment" | grep -oP 'core ref: \K\S+' || true)"
-            echo "::set-output name=ref::$core_ref"
+            core_ref=$(echo "$comment" | grep -oE 'core ref: [a-f0-9]{40}' | cut -d' ' -f3 || true)
+            if [ -n "$core_ref" ]; then
+              echo "Overriding chainlink repository commit hash with: $core_ref"
+              echo "::set-output name=ref::$core_ref"
+            else
+              echo "Using default chainlink repository branch: $default"
+              echo "::set-output name=ref::$default"
+            fi
           else
-            echo "::set-output name=ref::develop"
+            echo "::set-output name=ref::$default"
           fi
       - name: Clone Chainlink repo
         uses: actions/checkout@9bb56186c3b09b4f86b1c65136769dd318469633 # v4.1.2

README.md

@@ -57,7 +57,7 @@ Follow the steps below to ensure that we don't run into any unexpected breakages
 the `main` branch of chainlink-ccip. You can do this by:
     - Creating a branch in the CCIP repo and running `go get github.com/smartcontractkit/chainlink-ccip@<your-branch-commit-sha>`.
     - Fixing the build/tests.
-    - You can specify a particular commit hash on the chainlink repo by adding "core ref: commit sha" to your PR description. See [this](https://github.com/smartcontractkit/chainlink-ccip/pull/307) as an example. If you update the description, manually rerun the workflow.
+    - You can specify a particular commit hash on the chainlink repo by adding "core ref: commit sha" to your PR description. See [this](https://github.com/smartcontractkit/chainlink-ccip/pull/307) as an example. If you update the description, manually rerun the workflow. **NOTE**: Your PR description should not contain single quote (').
 4. Once your chainlink-ccip PR is approved, merge it.
 5. Go back to your chainlink PR and bump the chainlink-ccip version to the latest main.
 6. Once the integration test passes, merge your chainlink PR into `develop`.