try verbose dry run to see what it does :)

.github/workflows/snapshot-on-push-master.yml

@@ -111,7 +111,7 @@ jobs:
           git config push.default simple
           git add -A
           git commit -m "Updated from cc65 commit ${GITHUB_SHA}."
-          #git push -v
+          git push -n -v
 
     # enter secrets under "repository secrets"
       - name: Upload snapshot to sourceforge