repository git with permission group

git_group.txt

sudo groupadd developers

adduser username
usermod -a -G developers username

mkdir repository.git
cd !$
git --bare init

touch readme.md
git add .
git commit -a -m "my first commit"

sudo chmod -R g+ws *
sudo chgrp -R developers *

git repo-config core.sharedRepository true

git push origin master