git-svn and svn branches

I followed the following instructions on adding a remote svn branch to my local git-svn repository. http://www.dmo.ca/blog/20070608113513

Are these still accurate?

I started the repository with
  # git svn init [url/trunk]`
  # cd project.git
  # git svn fetch -r[HEAD revision]
which works fine. I added something like Snippet 1 to the .git/config and
issued a `git svn fetch -r[HEAD revision of the branch]` and nothing
happens. It takes git-svn a few seconds to run, but the git-remote svn
branch doesn't get initialized.

Does this procedure only work with a full mirror of a git-svn repository? or perhaps I'm doing something wrong. Any help would be appreciated.

Thanks, Ryan

Snippet 1 =========

[svn-remote "svn34"] url = svn+ssh://your-server/home/svn/project-name/branches/3.4.x fetch = :refs/remotes/git-svn-3.4