git-svn with multiple remote repositories?

Hello,

I am trying to create a git repository with two remote svn repositories so that I can merge/move patch-sets back and forth between the svn repositories.

This is what I have tried so far:

  mkdir -p project
  cd project
  git-svn init -R private -s https://foo.bar/repos/private

Then I go and edit .git/config too look like this:

  [core]
          repositoryformatversion = 0
          filemode = true
          bare = false
          logallrefupdates = true
  [svn-remote "private"]
          url       =   https://foo.bar/repos/private
          fetch     =      trunk:refs/remotes/private/trunk
          branches  = branches/*:refs/remotes/private/*
          tags      =     tags/*:refs/remotes/private/tags/*
  [svn-remote "public"]
          url       =   https://foo.bar/repos/public
          fetch     =      trunk:refs/remotes/public/trunk
          branches  = branches/*:refs/remotes/public/*
          tags      =     tags/*:refs/remotes/public/tags/*

And finally, I do

  git-svn fetch -R private
  git-svn fetch -R public

Both commands seem to fetch the contents from their origins. But git-branch shows me only the local master branch with contents from the "private" svn repository. When I do

  git checkout public/trunk

the contents actually change to reflect the "public" svn repository, but git-branch says I am on "(no branch)" at all.

As a newbie to git, I am somewhat confused now. Any hints how I can get a hold on the remote branches merge between them?