diff --git a/.github/workflows/integration-tests-docker.yml b/.github/workflows/integration-tests-docker.yml
index f1f420731..5809187d0 100644
--- a/.github/workflows/integration-tests-docker.yml
+++ b/.github/workflows/integration-tests-docker.yml
@@ -15,13 +15,29 @@ jobs:
   integration_tests_docker:
     name: Run docker tests
     runs-on: ubuntu-latest
+    env:
+      # TEMP: cosmos-test-keys branch with fixes
+      # TODO: replace with origin/develop when ready
+      DEFAULT_CORE_REF: 9c95732370e5c39a5dccf21e6db9fe167abe8d09
+      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
     steps:
+      - name: Ensure jq is installed
+        run: sudo apt-get install -y jq || echo "jq is already installed"
+      - name: Get commit hash from PR's original comment
+        if: github.event_name == 'pull_request'
+        id: get-comment-ref
+        run: |
+          comment=$(gh pr view https://github.com/${{ github.repository }}/pull/${{ github.event.pull_request.number }} --json comments -q '.comments[0].body')
+          core_ref=$(echo $comment | grep -oP 'core ref: \K\S+')
+          if [ ! -z "$core_ref" ]; then
+            echo "CUSTOM_CORE_REF=${core_ref}" >> "${GITHUB_ENV}"
+          fi
+
       - name: Checkout chainlink repo
         uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab # v3.5.2
         with:
           repository: smartcontractkit/chainlink
-          # TEMP: cosmos-test-keys branch with fixes
-          ref: 9c95732370e5c39a5dccf21e6db9fe167abe8d09
+          ref: ${{ env.CUSTOM_CORE_REF || env.DEFAULT_CORE_REF }}
           path: temp/chainlink
 
       - name: Update chainlink-cosmos sha