nazmul@Roar-desktop:~/nitrogen$ repo sync --force-sync
error: Unable to append to /home/nazmul/nitrogen/.repo/manifests.git/logs/refs/remotes/origin/mm6.0: Permission denied
From https://github.com/nitrogen-project/nitrogen_manifest
 ! c36963b..8e65f55  mm6.0      -> origin/mm6.0  (unable to update local ref)
error: Unable to append to /home/nazmul/nitrogen/.repo/manifests.git/logs/refs/remotes/origin/mm6.0-all: Permission denied
 ! e148072..6945863  mm6.0-all  -> origin/mm6.0-all  (unable to update local ref)