Unfortunately, CVS/SVN is not supported on our shared hosting servers because it requires dedicated resources and higher user privileges. You can have it on our dedicated solutions only.
On a dedicated solution you can also have git which is a popular choice for a version control system. For more information about git please check our git tutorial.
Git is also available on our GoGeek plans via our SG-Git cPanel plugin. It allows our customers to create GIT repositories through an easy interface. More information on how to use this plugin can be found in our SG-GIT tutorial.