Comment by rbalicki

Speculating here, but perhaps your coworker was too ambitious? In my opinion, you should start with AI-generated PRs that do small, linting refactors and then work up from there. In particular, if this is done in parts, one of the strategies you can employ is to: - add tests - break files up into smaller parts - test the smaller parts - then actually improve behavior

(Which is no different than what you would do as a human)