Bug-Report: git-svn and backslash in SVN branch name

Hi,

I'm trying to clone a SVN repo in order to migrate it to git but i hit a wall with SVN branch names that contain a backslash, which seems to be allowed in SVN but prohibited in git refs:

r289 = c4cb1f0c34e741a07de9673515c853d49c5522b9
(refs/remotes/origin/dicomBaseClass)
Found possible branch point: file:///path.repo/trunk/dicomBaseClass =>
file:///path.repo/tags/dicomBaseClass%5Cv0.1, 181
Initializing parent: refs/remotes/origin/tags/dicomBaseClass\v0.1@181
W: Ignoring error from SVN, path probably does not exist: (160013):
Filesystem has no item: File not found: revision 101, path
'/trunk/dicomBaseClass'
W: Do not be alarmed at the above message git-svn is just searching
aggressively for old history.
This may take a while on large repositories
Found possible branch point: file:///path.repo/dicomBaseClass =>
file:///path.repo/trunk/dicomBaseClass, 172
Initializing parent: refs/remotes/origin/tags/dicomBaseClass\v0.1@172
fatal: update_ref failed for ref
'refs/remotes/origin/tags/dicomBaseClass\v0.1@172': refusing to update
ref with bad name
'refs/remotes/origin/tags/dicomBaseClass\v0.1@172'
update-ref -m r75 refs/remotes/origin/tags/dicomBaseClass\v0.1@172
1fe0cc23e3cd56a1087562f8ca3d2e40cd2b30d4: command returned error: 128

The tag in case is "dicomBaseClass\v0.1@172".

Is there a way to mangle those names on the fly to get rid of the backslashes or can they be handled in any other way to be compatible with git?

Cheers,