Git checkout to previous working commit

checkit.sh

# We're currently on `non-working` branch, and we've identified a previous working commit of `abcdef123456`.
# We want to go back to commit `abcdef123456`, and then start work anew from there

# First checkout to the working commit `abcdef123456`
git checkout abcdef123456

# You'll be in a temporary staging area now. If we want to make changes now, we'll need to copy the current commit
# into a new branch.
git checkout -b previous-working-branch

# Now if you check git log, you should see the working commit as `abcdef123456`
git log

# Outputs: 
# commit abcdef123456<rest of hash> (HEAD -> previous-working-branch)
# Author: Whomever <email@email.com>