Git Book - Setting Up a Private Repository: "Setting Up a Private Repository
If you need to setup a private repository and want to do so locally, rather than using a hosted solution, you have a number of options.
Repo Access over SSH
Generally, the easiest solution is to simply use Git over SSH. If users already have ssh accounts on a machine, you can put the git repository anywhere on the box that they have access to and let them access it over normal ssh logins. For example, say you have a repository you want to host. You can export it as a bare repo and then scp it onto your server like so:
$ git clone --bare /home/user/myrepo/.git /tmp/myrepo.git
$ scp -r /tmp/myrepo.git myserver.com:/opt/git/myrepo.git
Then someone else with an ssh account on myserver.com can clone via:
$ git clone myserver.com:/opt/git/myrepo.git
Which will simply prompt them for thier ssh password or use thier public key, however they have ssh authentication setup.
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