pre-push

#!/bin/sh

# Prevent pushing to `protected_branch`.
# Just place this file in your `.git/hooks` folder and make sure it is executable

protected_branch='master'
current_branch=$(git symbolic-ref HEAD | sed -e 's,.*/\(.*\),\1,')

if [ $protected_branch = $current_branch ]
then
    echo "You're pushing to master, that is NOT ALLOWED"
    echo
    exit 1 # push will not execute
else
    exit 0 # push will execute
fi