Make a bare Git repository. That is, instead ofcreating and placing the administrativefiles in `/.git`, make the itself the $GIT_DIR. This obviously implies the --no-checkoutbecause there is nowhere to check out the working tree.Also the branch heads at the remote are copied directlyto corresponding local branch heads, without mappingthem to refs/remotes/origin/. When this option isused, neither remote-tracking branches nor the relatedconfiguration variables are created.