fix: PR from fork

Author: hyiso

.github/workflows/pr_commits.yml

@@ -18,4 +18,4 @@ jobs:
         run: dart pub get
 
       - name: Validate PR Commits
-        run: VERBOSE=true dart run commitlint_cli --from="origin/${{ github.base_ref }}" --to="${{ github.head_ref }}" --config lib/commitlint.yaml
+        run: VERBOSE=true dart run commitlint_cli --from=${{ github.event.pull_request.head.sha }}~${{ github.event.pull_request.commits }} --to=${{ github.event.pull_request.head.sha }} --config lib/commitlint.yaml