Git and EGit are getting popular. In case you want to start hacking on EGit this will give you some hints.
First install EGit following this guide EGit Tutorial.
First you need a few libraries from Orbit via cvs. The cvs location is “:pserver:email@example.com/cvsroot/tools”. You need:
See Libraries from Orbit for getting these libraries.
Select File -> Import -> Git -> Git Repository and paste the URL “git://egit.eclipse.org/jgit.git” into the first line.
Do the same with “git://egit.eclipse.org/egit.git”.
Currently there is a little bug in EGit, please see Bug Report. If you facing the problem that the Team operations are not available on your new project my EGit Tutorial describes what to do to make the Team operations available. This should be fixed very soon, path is already commited to the master branch.
You have now the source code in your workspace and can start hacking.
For more info please see the excellent EGit Contributor Guide.