Splitting a Git commit into multiple commits

To split a commit into multiple commits I’ve used the following workflow:

Do an interactive rebase from an earlier commit.
Change the command for the commit(s) to split to edit.
When you run the rebase, you’ll be dropped back into the shell for each commit, at that commit (after the commit has been applied).
Reset to HEAD~1 to undo the commit.
git add -p to create the new commits.
Commit as normal.
git rebase --continue to continue the interactive rebase. If there are no more interactive actions to do, you’re done.