fix: generate previews from forked repos

.github/workflows/pull_request.yml

@@ -96,8 +96,6 @@ jobs:
           # Debug information
           echo "Current directory: $(pwd)"
           echo "Contents of the repository:"
-          branch_name="${{ github.ref }}"
-          echo "branch_name: $branch_name"
 
           ls -al
           echo "Git status:"