Use Gitorious as the source code hosting provider
The plugin changes the links to point to Gitorious instead of the built-in browser. It does not require the GitPlugin, but uses it if it's available. In this case, you should setup a local clone of your Gitorious repository, and keep it updated.
This plugin is useful if the source code is hosted on Gitorious, instead of locally in Trac.
If you have any issues, create a new ticket.
Download the zipped source from here.
You must set it up in your trac.ini file by activating the component:
[components] gitoriousplugin.* = enabled
and by defining the name of the project on Gitorious:
[gitorious] project = myproject
You can also set the repository key to the name of your main repository on Gitorious. If you don't specify it, the same name as the project will be used.
At the moment, it only supports links to the master branch.