GIT update hook for git push to deploy

update

#!/usr/bin/env bash

readonly APP_NAME=test_app
readonly GIT_WORK_TREE=~/apps/$APP_NAME

declare REF_NAME=$1 COMMIT_HASH=$3

if [[ "$REF_NAME" == "refs/heads/master" ]]; then
	echo "Master branch updated. Deploying to production."
	mkdir -p $GIT_WORK_TREE
	git --work-tree=$GIT_WORK_TREE checkout -f $COMMIT_HASH
else
	echo "Pushing to branch other than master. Deployment is done only when pushing to master branch."
fi