Update rollback.yml

Author: dead-claudia

.github/workflows/rollback.yml

@@ -10,9 +10,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v4
-      with:
-        ref: next
+    - run: git clone --depth=0 https://github.com/MithrilJS/mithril.js.git && cd mithril.js
     - uses: ./.github/actions/setup
     - run: npm run build
     - run: npx pr-release rollback --verbose --target master --source next --verbose --ignore 'package*' --ignore docs/changelog.md --ignore docs/recent-changes.md