Update structure-check.yml

Signed-off-by: LUG Tiet <[email protected]>

.github/workflows/structure-check.yml

@@ -17,8 +17,18 @@ jobs:
 
     - name: Validate Structure
       run: |
+        # Ensure there is atleast one previous commit
+        if [ $(git rev-parse --is-shallow-repository) = true ]; then
+          git fetch --unshallow
+        fi
+
         # Get the list of changed files in the push
-        changed_files=$(git diff --name-only HEAD~1 HEAD)
+        if git rev-parsem --verify HEAD~1 >/dev/null 2>&1; then
+          changed_files=$(git diff --name-only HEAD~1 HEAD)
+        else
+          changed_files=$(git ls-files)
+        fi
+        
 
         # Defined allowed Directories
         username="${{ github.actor }}"