The original approach was to be a surgeon and minimally cut the code to save the patient (the PR). You need to change your thinkong to realize the architecture of the prompt was wrong. Talk in abstractions and let them fully revise the PR, like "this should be refactored to reraise errors to the calling function" instead of pinpointing single lines.

In other words, we need to code review the same way we interact with LLMs - point to the overarching flaw and request a reroll.