[shmichael]

Amending commits, while having the advantage of keeping the git tree pristine at every single point, is incredibly uncomfortable for async workflows such as the one suggested, where your review might take hours/days and you want to continue coding in a forked branch. Upstreaming any code review changes becomes a pain as git treats the two branches as completely distinct.

[aslatter]

That is a pain, but the --update-refs argument to git-rebase helps somewhat: https://git-scm.com/docs/git-rebase#Documentation/git-rebase...