git finding duplicate commits (by patch-id)
===

I'd like a recipe for finding duplicated changes.
patch-id is likely to be the same but the commit attributes may not be.

This seems to be an intended use of patch-id:

> git patch-id --help
> IOW, you can use this thing to look for likely duplicate commits.

I imagine that stringing together "git log", "git patch-id" and uniq
could do the job badly but if someone has an command that does the
job well, I'd appreciate it.

