cleaning work dir

Author: rbanka1

.github/workflows/nightly.yml

@@ -26,6 +26,11 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
+    - name: Clean workspace
+      run: |
+        find $GITHUB_WORKSPACE -mindepth 1 -delete 2>/dev/null || true
+        mkdir -p $GITHUB_WORKSPACE
+
     - name: Checkout repository
       uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
       with: