When cloning a SVN repo with git-svn it searches laboriously through every revision for changes that are relevant (at least as I understand it). Is there anyway to make this process quicker?

I found this link: https://stackoverflow.com/questions/747075/how-to-git-svn-clone-the-last-n-revisions-from-a-subversion-repository that suggests it is possible to limit the number of revisions, just need to figure out how far back to go and how to find that number