git server: http

http://plog.longwin.com.tw/my_note-unix/2009/05/11/build-git-env-over-http-2009
http://www.jedi.be/blog/2009/05/06/8-ways-to-share-your-git-repository/

Assume you mirror the remote git
git clone --mirror http://src.chromium.org/git/XXX.git
cd XXX.git
git update-server-info

Client:
git clone http://IP_TO_YOUR_SERVER/XXX.git

[Note] You can also use file base git
git clone /dir/to/your/git