fix: checkout for PRs from forks (#294)

Author: walkowif

.github/workflows/build-check-install.yaml

@@ -309,6 +309,7 @@ jobs:
         uses: actions/checkout@v4.1.1
         if: github.event_name == 'pull_request'
         with:
+          ref: ${{ steps.branch-name.outputs.head_ref_branch }}
           path: ${{ github.event.repository.name }}
           repository: ${{ github.event.pull_request.head.repo.full_name }}
           fetch-depth: 0