On Thu, Mar 18, 2021 at 4:00 PM Bruce Momjian <br...@momjian.us> wrote: > Probably because later commits might collide with shorter hashes. When > you are reporting a hash that only looks _backward_, this is not an > issue.
Right, but it's extremely unlikely to happen by accident. I was suggesting that there might be a security issue. I could fairly easily make my git commit match a prefix intended to uniquely identify your git commit if I set out to do so. There are projects that might have to consider that possibility, though perhaps we're not one of them. -- Peter Geoghegan