But you can go back and change a commit message with ammend? Or are you wanting to change other people's?
https://www.atlassian.com/git/tutorials/rewriting-history#gi...
https://www.atlassian.com/git/tutorials/rewriting-history#gi...
Ammending changes the hash of the commit. That doesn't matter if you haven't pushed it yet but if you have, you can't push the change upstream without force-pushing.
And if I want to change a commit message further back in history (regardless of my own or of somebody else), it would branch off at that point from the upstream git history.
What I want is that you could put multiple comments onto the same commit with different timestamps. Like git versions files, it should also allow to version commit messages.
The key point is "your own tooling". Git has a great tool universe but unfortunately you immediately lose many tools if you go beyond what the core offers.
Not necessarily. Fossil's `amend` command works by adding additional information to the repo that the web UI and commands like `fossil info` look at when building up information intended for direct consumption by the user.
In this way, you can edit commit messages, rename branches/tags, add/remove tags, etc. to historical check-ins without breaking the blockchain / Merkle tree of commits.
This allows Fossil to keep all of the historical information about what happened to a given file, commit, ticket, etc. while still allowing a coherent presentation of the current state of affairs to the user.