Fix workflow

.github/workflows/main.yml

@@ -45,6 +45,7 @@ jobs:
         run: |
           echo "PWD: $(pwd)"
           echo "GITHUB_WORKSPACE: ${{ github.workspace }}"
+          echo "env GITHUB_WORKSPACE: $GITHUB_WORKSPACE"
           ls -l
           ls -l src || echo "src directory not found"
       - name: Run clang-format