git svn fetch为分支多次检索相同的Subversion修订版

I am seeing git svn fetch repeatedly retrieve the same Subversion revisions when it finds branches in my Subversion repository. We are using the standard Subversion repository layout, with top level /trunk, /tags, and /branches directories (and the git repository was created with 'git svn init -s'). However, the problematic branches are often copies made from a subdirectory inside of trunk, instead of trunk.I am seeing git svn fetch repeatedly retrieve t