Fix Forgejo workflow: add proper git clone for checkout step

.forgejo/workflows/compile-apt-layer.yml

@@ -20,10 +20,10 @@ jobs:
     steps:
     - name: Checkout code
       run: |
-        echo "Using local repository..."
-        # Since we're already in the repository, just ensure we're on the right branch
-        git status
-        echo "Repository ready for compilation"
+        echo "Cloning repository from Forgejo..."
+        git clone http://forgejo:3000/robojerk/particle-os-tools.git .
+        git checkout ${{ github.sha }}
+        echo "Repository checked out successfully"
       
     - name: Set up environment
       run: |