workflow: use force pushing

.gitea/workflows/update-flake.yaml

@@ -18,8 +18,7 @@ jobs:
 
       - name: Fetch latest changes and reset branch
         run: |
-          git fetch origin main
-          git status
+          git fetch origin
           git rebase origin/main
 
       - name: Set up Nix
@@ -38,5 +37,5 @@ jobs:
             echo "No changes to commit."
           else
             git commit -m "Update flake.lock $(date -I)"
-            git push origin flake-updates
+            git push -f origin flake-updates
           fi