“It never reimplements git — it shells out to the system git CLI and rebuilds commits with git commit-tree, reusing each commit's original tree so file contents are provably never changed.”
Glad the LLM noted this - I was worried this would reimplement git
Reimplementing the good parts of git takes maybe 2-3 days with Claude. I did that, and I use it daily instead of the legacy git. Doing the new things was a longer and way more interesting story. https://replicated.live/blog/click
Ha ha fair. But yeah shelling out to git and reusing the original tree object was deliberate means file contents can't change even if I screw up elsewhere.
Yes, for instance it could be useful if someone’s been accidentally committing with a bogus email address. Or if you’re cleaning up some sort of mess and would like to recreate an accurate history.
Obviously as with any “force push” situation, the usual caveats apply if this is on a branch others have checked out, but if the mess is big enough, it is sometimes worth it to send everyone a script to reset or just to have people delete and re-check-out.
2. Sometimes I split a Git repo into two, and I want to preserve the commit history (authors and dates) on the files that end up in the new repo - effectively replay the history of just one folder from the original to help create the new one.
3. I occasionally mess up cleaning up and merging a PR from an open source contributor such that the work is incorrectly credited to me. I'll fix the commit so that it credits the right person.
Yes. Absolutely! Many times I had a wrong configured terminal and messed up the author. Often I work in different projects, privately and in my work, and I use different authors for both
Please put up this or another screenshot as the first thing you see in the README - please!
I'm reluctant to clone a repository and spend time on it just to find out the project looks crap and I don't want to use it. A screenshot saves other people's time :)
I built a small Tauri app that just shows your commits in a table and lets you edit message/author/date directly, plus find & replace with regex if you need to fix a bunch at once. It backs up the branch before it rewrites anything doesn't touch file contents, just metadata.
“It never reimplements git — it shells out to the system git CLI and rebuilds commits with git commit-tree, reusing each commit's original tree so file contents are provably never changed.”
Glad the LLM noted this - I was worried this would reimplement git
Reimplementing the good parts of git takes maybe 2-3 days with Claude. I did that, and I use it daily instead of the legacy git. Doing the new things was a longer and way more interesting story. https://replicated.live/blog/click
Ha ha fair. But yeah shelling out to git and reusing the original tree object was deliberate means file contents can't change even if I screw up elsewhere.
Why would you think such a project would reimplement git?
This is cool, but has anyone ever needed to rewrite commit authors or dates?
Yes, for instance it could be useful if someone’s been accidentally committing with a bogus email address. Or if you’re cleaning up some sort of mess and would like to recreate an accurate history.
Obviously as with any “force push” situation, the usual caveats apply if this is on a branch others have checked out, but if the mess is big enough, it is sometimes worth it to send everyone a script to reset or just to have people delete and re-check-out.
If someone's been committing with a bogus email address and they're still working on the project, shouldn't they clean up their own commits?
Usually its me who has been committing with a bogus email address, because I don't like having my real user/email set in my $HOME/.gitconfig
Yeah, using this tool for example?
I've needed to do this for a bunch of reasons.
1. Sometimes I do a scraping project where I want the commit dates to match when the data actually changed, reconstructed from sources like the Internet Archive or the dates on https://platform.claude.com/docs/en/release-notes/system-pro... - for example here: https://github.com/simonw/research/commits/main/extract-syst... - or this project that attempted to reconstruct the history of Tim Berners-Lee's original browser: https://github.com/simonw/1991-WWW-NeXT-Implementation/commi...
2. Sometimes I split a Git repo into two, and I want to preserve the commit history (authors and dates) on the files that end up in the new repo - effectively replay the history of just one folder from the original to help create the new one.
3. I occasionally mess up cleaning up and merging a PR from an open source contributor such that the work is incorrectly credited to me. I'll fix the commit so that it credits the right person.
git-filter-repo is amazing for the second case. I've used it to split repos and rename folders multiple times.
Yeah, I wrote a TIL about that a few years ago: https://til.simonwillison.net/git/rewrite-repo-specific-file...
Yes. Absolutely! Many times I had a wrong configured terminal and messed up the author. Often I work in different projects, privately and in my work, and I use different authors for both
yes; when i wanted to make it look like i didn’t procrastinate for a week and implement the entire feature in one day
Would be great to have this, but as a TUI tabular editor.
Hmmm, this seems to be making easy something you normally should not do.
So, exactly like a knife? Generally we don't want to cut people open, but when we need to do it, like during surgery, a sharp knife sure helps.
that's it
Agreed mostly. The intent is local cleanup before you push like fixing a wrong author email across a batch or dates from a machine with a bad clock
I would like to see something like this in magit. Other there is already?
No idea not an emacs person does magit handle bulk author/date edits or just reword? genuinely curious
This looks cool! Are there screenshots available?
https://imgur.com/a/V5EGCOw
Please put up this or another screenshot as the first thing you see in the README - please!
I'm reluctant to clone a repository and spend time on it just to find out the project looks crap and I don't want to use it. A screenshot saves other people's time :)
done
I'd put that in the repo not here.
you're right, done
Extra points for the name.
Appreciate it! pick a commit, stab it
I built a small Tauri app that just shows your commits in a table and lets you edit message/author/date directly, plus find & replace with regex if you need to fix a bunch at once. It backs up the branch before it rewrites anything doesn't touch file contents, just metadata.