$ whoami 
git
$ ls -la /home/git/repositories/
total 16
drwxr-x--- 4 git git 4096 May 18 07:34 .
drwxr-xr-x 8 git git 4096 May 17 15:56 ..
drwxr-x--- 7 git git 4096 May 17 15:39 game.git

$ whoami
akawolf
$ groups
akawolf adm cdrom sudo dip plugdev lpadmin sambashare debian-transmission svn nogroup
$ id akawolf
uid=1000(akawolf) gid=1000(akawolf) groups=1000(akawolf),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),65534(nogroup),109(lpadmin),124(sambashare),1001(svn),133(debian-transmission),111(git)
$ ls -la /home/git/repositories/
ls: cannot open directory /home/git/repositories/: Permission denied