a few more untested fixes

.github/workflows/maintenance-rewrite-kernel-patches.yml

@@ -48,7 +48,7 @@ jobs:
             git clean -fd
           else
             # No repo: clone it
-            git clone --depth 1 --filter=blob:none "https://github.com/${REPO}" .
+            git clone --depth 1 --filter=blob:none -b "$REF_NAME" "https://github.com/${REPO}" .
             git checkout "$REF_NAME"
           fi
 
@@ -66,10 +66,10 @@ jobs:
           set -euo pipefail
           if git diff --quiet; then
             echo "has_changes=false" >> "$GITHUB_OUTPUT"
-            echo "::notice::No changes detected after rewrite-kernel-patches"
+            echo "::notice::No changes detected after ${WHATTODO}"
           else
             echo "has_changes=true" >> "$GITHUB_OUTPUT"
-            echo "::notice::Changes detected after rewrite-kernel-patches - PR will be created"
+            echo "::notice::Changes detected after ${WHATTODO} - PR will be created"
           fi
 
       - name: Build PR body