Thanks to cmcginty from https://stackoverflow.com/questions/2411031/how-do-i-clone-into-a-non-empty-directory
Useful for if you have a local project directory that you want to re-sync with your git repo
git init
git remote add origin PATH/TO/REPO
git fetch
git reset origin/master # Required when the versioned files existed in path before "git init" of this repo.
# git checkout -t origin/master # Original line, but gave me an error
git branch --set-upstream-to=origin/master