Allow push to certain branches only

pre-push.sh

#!/bin/bash

allowed_branches=(develop branch2 branch3)
is_allowed=0

for i in ${!allowed_branches[@]};
do
  branch=${allowed_branches[$i]}
  if [[ "$branch" = "$(git rev-parse --abbrev-ref HEAD)" ]]
  then
    is_allowed=1
  fi
done

if [[ "$is_allowed" -ne 1 ]]
then
  echo You are only allowed to push to the following branches: ${allowed_branches[@]}
  exit 1
fi