Transferring a CVS repository to a GIT one is pretty simple.
You need first to install the following packages: git-cvs cvsps.
In ArchLinux, git-cvs is lacking of support in ArchLinux, so I used an RPM-based box.
yum install git-cvs cvsps
Then, simply run the following command in a given folder $FOLDER.
git cvsimport -v -d :pserver:firstname.lastname@example.org:/sources/classpath $MODULE_NAME