Overview

A note on the steps to split a commit.

Steps

# Specify where you want to split and rebase. Set the target commit to edit.
git rebase -i HEAD~5

# Unstage
git rebase HEAD~

# Recommit the unstaged changes at the desired granularity.
git add & git commit

# Once the commit is complete, continue the rebase
git rebase --continue

# Check the log
git log

# Force push
git push -f origin HEAD

This should allow you to split the commit.