On some occasion you want to serve your git repo from your local copy (perhaps your git repository is quite large and your internet connection is slow or your build process would benefit from pulling from an intermediary without authentication). Here are 2 ways to serve your git repository without any configuration or software installation. Both ways serve a single repository without authentication or encryption but read-only (no push).
Using the git protocol
The git executable is itself a git server using the native git protocol. Inside the root of the repository run the following command
git daemon --reuseaddr --verbose --base-path=. --export-all ./.git
And on the client you can clone by running
git clone git://servername/ reponame
Using the HTTP protocol
This way serves the repo over HTTP using Python 2's SimpleHTTPServer. Run the following in the rot of the git repo
git update-server-info cd .git python -m SimpleHTTPServer
And on the client clone by running
git clone http://servername:8000/ reponame
I've added both ways as git aliases in my rcfiles repo.