For a bit of background, see:

  http://my.opera.com/cstrep/blog/2011/04/10/how-to-tag-a-remote-git-repository-or-vcs-support-for-fabric

Basic version control abstraction for Fabric.
If you don't know what Fabric is, go to http://www.fabfile.org

Example of things you can do:

    vcs.list_tags(
        repository_type = 'git',
        repository_url = 'http://svn.server/project',
    )

or:

    vcs.tag(
        # Note: no 'trunk' or branches in the URL
        repository_url = 'http://some.svn.server/svn/project',
        repository_type = 'svn'
        message = 'Some comment',
        tag = 'tag-name',
    )