After receiving the first LLM-generated pull requests, I have decided to blanket no longer look at those. When studying a PR, I take into account who made it, and if they've previously been careful developers. LLM-generated code I have no idea about, and the amount of scrutiny required is just too much. Because I have to assume you have no idea what you are doing.
@bert_hubert I recently came to the same conclusion. The company I work for is starting to roll out an AI-policy (which is a good thing), and one of my requirements was that AI-assisted PRs would mention they're AI-assisted.
The basis for this was that I have various levels of trust of my colleagues. So when I review a PR, I take the knowledge of the creator into account. I cannot do that with an AI, because I don't trust the knowledge of the AI.