repopuller grabs a copy of a Subversion or CVS repo.
Requires a single argument, either a Subversion URL or a CVS URL or the name of a local mirror directory created by a previous run.
The first form creates a local mirror of the repository in a directory named after the last segment of the URL, with the suffix “-mirror”.
The second form updates the local mirror, doing an incremental fetch; just give the mirror directory name.
Subversion URLs are as specified in the Subversion documentation. CVS URLs must specify a host and repository path, followed by a '#', followed by a module name.