try again

.github/workflows/changelog.yml

@@ -1,9 +1,10 @@
 name: Changelog Update
 
 on:
-  push:
+  pull_request:
     branches:
       - main
+    types: [opened, synchronize, reopened]
 
 permissions: write-all
 
@@ -15,26 +16,28 @@ jobs:
         uses: actions/checkout@v3
         with:
           fetch-depth: 0
+          ref: ${{ github.head_ref }}
 
       - name: Set up Node.js
         uses: actions/setup-node@v3
         with:
           node-version: "18"
-          cache: 'npm'
 
       - name: Install conventional-changelog-cli
         run: npm install -g conventional-changelog-cli
 
-      - name: Generate changelog
+      - name: Generate changelog diff
         run: |
-          git fetch --unshallow || git fetch origin main:main
+          echo "Pull Request Title: ${{ github.event.pull_request.title }}"
+          echo "Pull Request Body: ${{ github.event.pull_request.body }}"
           conventional-changelog -p angular -i CHANGELOG.md -s -r 0
-          cat CHANGELOG.md
+          git diff CHANGELOG.md > changelog_diff.md
+          cat changelog_diff.md
 
       - name: Commit and push changelog update
         run: |
           git config user.name 'github-actions'
           git config user.email '[email protected]'
           git add CHANGELOG.md
-          git commit -m "Update CHANGELOG.md" || echo "No changes to commit"
-          git push origin main
+          git commit -m "Update CHANGELOG.md based on PR #${{ github.event.pull_request.number }}: ${{ github.event.pull_request.title }}"
+          git push origin HEAD:refs/heads/${{ github.head_ref }}