pre-push.sh

#!/bin/bash

# Git hook to ask before pushing to specific branch or remote
# Adapted from https://blog.ghost.org/prevent-master-push/

# Put this in .git/hooks/pre-push and do not forget to make it executable

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

if [ $protected_remote = $current_remote ]
then
    read -p "You're about to push to $current_remote, is that what you intended? [y|n]" -n 1 -r < /dev/tty
    echo
    if echo $REPLY | grep -E '^[Yy]$' > /dev/null
    then
        exit 0 # push will execute
    fi
    exit 1 # push will not execute
else
    exit 0 # push will execute
fi

if [ $protected_branch = $current_branch ]
then
    read -p "You're about to push $current_branch, is that what you intended? [y|n]" -n 1 -r < /dev/tty
    echo
    if echo $REPLY | grep -E '^[Yy]$' > /dev/null
    then
        exit 0 # push will execute
    fi
    exit 1 # push will not execute
else
    exit 0 # push will execute
fi