git-svn set-tree

I have noticed that if I do a git-svn set-tree, remotes/git-svn retains the parent
from the branch where set-tree was performed.

If a coworker wants recreate my tree by using git-svn init && git-svn fetch
he looses the parent I have in my tree.

I wonder if not git-svn set-tree can record the parent information in the
svn repos log, so that git-svn init/fetch can recreate the parent relationship?

 Jocke