INFRA-3209 | Dhruv | use pr head instead of merged head

.github/workflows/kutegen_submodule_check.yml

@@ -17,6 +17,7 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
         with:
+          ref: ${{ github.event.pull_request.head.sha }}
           submodules: recursive
           token: ${{ secrets.GIT_HUB_ACCESS_TOKEN }}
           fetch-depth: 0