git hooks - prevent commit to local master branch and prevent push to remote master branch

pre-commit

#!/bin/sh
# prevent commit to local master branch

branch=`git symbolic-ref HEAD`
if [ "$branch" = "refs/heads/master" ]; then
    echo "pre-commit hook: Can not commit to the local master branch."
    exit 1
fi

exit 0

pre-push

#!/bin/sh
# Prevent push to remote master branch

while read local_ref local_sha remote_ref remote_sha
do
	if [ "$remote_ref" = "refs/heads/master" ]; then
		echo "pre-push hook: Can not push to remote master branch."
		exit 1
	fi
done

exit 0

more info: http://aaron-hoffman.blogspot.com/2017/04/git-protect-local-master-branch-commit-push.html

Installation:
Place these files in your ~/.git/hooks directory.