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Comment by wodenokoto | Hacker News Reader

Pretty cool idea.

Something I really want is a version of `git amend` that takes a commit hash, so I can amend my changes to any commit, not just the last one without having to start an interactive rebase.

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You could create an alias doing something like a "git commit --fixup <sha1>" and then a "git rebase --autosquash <sha1>~".

I mentioned elsewhere, but I made a simple bash function that does something like that but matches a string in a previous commit message (because I found that easier to type quickly than a commit hash):

  function git-commit-fixup() {
    git commit --fixup ":/$*"
  }
  # usage: suppose there's a commit "fix: the thing"
  git-commit-fixup thing
  # now there's a new commit "fixup! fix: the thing" which can be autosquashed

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