To add to this 100% correct comment, if you haven't tried using git bisect, I highly recommend it. The only thing you need is an automated way of determining if

To add to this 100% correct comment, if you haven't tried using git bisect, I highly recommend it. The only thing you need is an automated way of determining if a specific sha is "good" or "bad" based on the question you are trying to answer. Often that's "do the tests pass?" but (AFAIK) it can be any property of the state of the code. A++, will use again. (err, hopefully not, but you know what I mean)