Update clean.yml

.github/workflows/clean.yml

@@ -187,6 +187,7 @@ jobs:
           git diff-index --quiet HEAD || git commit -m "[Bot] Update ${{ matrix.country }}.m3u"
       - name: Pull Remote
         run: |
+          git config pull.ff only
           git pull origin bot/patch-1
       - name: Push Changes
         uses: ad-m/github-push-action@master