container: pull from linked repo
    
    We don't create a repo during this pungi run. We need to pull
    from a repo that was already created.
    
    This was a copy/paste error from f6e7f69.
    
    Signed-off-by: Dusty Mabe <dusty@dustymabe.com>
    (cherry picked from commit c4169526585144e44a6a99466e55a64cad2a9b03)