One of my bosses has been a little Ai-pilled recently and he also contributes code.

I can tell which parts are his AI slop not from any git blame or anything but because of how it looks. You can see the stylistic differences in a block of code from one file to the next, and also it seems like AI likes to add comments to everything, and he just copy and pastes it all into the file. Those comments are often very different looking, too. So just stylistically everything is all over the place.