git-prev-next allows you to easily navigate your commits, and amend them. It is built on top of interactive rebase.
Have you ever begun an interactive rebase to edit a commit, and then find that you also want to edit the parent commit? Or just wanted to edit a few commits back without going through the interactive rebase rigamarole?
> # Oops, I need to make a change three commits up
> git prev 3
...hack hack hack...
> git commit --amend
> # oh I need to fix the next commit too
> git next
...hack hack hack...
> git commit --amend
> # all done
> git rebase --continue
This takes the current HEAD commit and prepends it to the rebase todo list (as 'pick'). It then resets to the parent commit.
If there is not a current interactive rebase, git prev will begin one.
You can pass a number like git prev 3 to go up 3 commits.
This takes the next entry in the todo list, switches it to 'edit', and then invokes git rebase --continue. Note this terminates the interactive rebase if it reaches the top.
You can also pass a number to git next.
Install through copying or symlinking into your $PATH. For example:
ln -s $PWD/git-prev ~/.bin
ln -s $PWD/git-next ~/.bin
git prev and git next will refuse to enter or exit merge commits. They also will error if your worktree is not clean.