When I use git commit --amend command, it will generate a new change-id. But I want to use the previous change-id and don’t want to generate a new one. How should I keep the old change-id and keep only one change-id?

When you use git commit --amend, it creates a new commit that replaces the previous commit. This new commit will have a new commit hash and will be treated as a completely separate commit by Git, even though it may contain the same changes as the previous commit.

To keep the old change-id and have only one change-id, you can use the git commit --amend --no-edit command. This will allow you to amend the previous commit without creating a new commit or changing the commit message. The change-id will remain the same and you will only have one change-id for that commit.

It’s important to note that using git commit --amend can be a powerful tool, but it should be used with caution, as it can cause confusion if used improperly. If you have already pushed the commit to a remote repository, you should be careful when using git commit --amend, as it can cause problems when working with other collaborators. It’s generally a good idea to communicate with your team before using git commit --amend on a commit that has been pushed to a remote repository.