Multiple SVN remote branches listed in "git branch -r" after "git-svn fetch"

From: Bradley Wagner <bradley.wagner@hannonhill.com>
Date: Apr 30, 2010, 18:59 UTC
Message-ID: <v2q2f0f6ced1004301159z21c3539av4983488df963ddf0@mail.gmail.com>

So I did a conversion to Git using git-svn.

git init <svn_url>
# updated the .git/config file to reference a few different locations
for branches:
[svn-remote "svn"]
        url = <svn_url>
        fetch = cascade/trunk:refs/remotes/trunk
        branches =
cascade/branches/{hibernate-upgrade,spring-upgrade}}:refs/remotes/*
        branches = cascade/branches/{6.x,5.x,4.x,3.x}/*:refs/remotes/*
        tags = cascade/tags/{3.7.x,4.x,5.x,6.x,old-releases}/*:refs/remotes/tags/*
git svn fetch

Now, I'm seeing branches/tags listed multiple times with: git branch -r

  6.x/6.0.2.1
  6.x/6.0.2.1@12401
  6.x/6.0.2.1@12422
....
  tags/4.x/rel_4_22
  tags/4.x/rel_4_22@4093
  tags/4.x/rel_4_22@4384

What do these other branches with the @ sign mean? Did I do something wrong?

Thanks, Bradley