Resolution: Please review.
If something is unclear, consider asking the author to clarify things
for you, either in review comments or by adding comments to their code.
You can manually add the "status: waiting for response" label if you
haven't had a reply in a while. This will start the timer for the PR
to be closed after several days.
If you aren't getting replies to your feedback, you can also choose to
re-implement what the contributor has sent in a different way. But do
not copy their code and merge it as your own, as this would strip the
original author of credit for their work.
If you want to keep the original implementation, but make small changes
to it, you can edit the PR before merging it:
1. Go to the "Files changed" tab of the PR
2. Click the overflow menu on the right side of the diff
3. Click "Edit file"
4. Leave comments in the PR to explain your change to the author