When should you avoid changing a past commit? Avoid amending commits that other developers have based their work onWhen you want to add a new file to your commitWhen you want to change the not most recent commit.

You should avoid changing a past commit in the following situations:

1. When other developers have based their work on your commit: If you amend a commit that others have already started working on, it can create confusion and potential conflicts in the code. It's better to create a new commit that reverses the changes or moves forward from the current state of the code.

2. When you want to add a new file to your commit: If you want to add a new file to a past commit, it's better to create a new commit. Amending a past commit would change the commit history, which can be confusing for other developers.

3. When you want to change a commit that is not the most recent one: If you need to change a commit that is not the most recent one, it's better to use other tools like git rebase. Amending a past commit would rewrite the commit history, which can cause problems if other developers have based their work on those commits.