"clean" filter breaks git-svn

I'm playing around with smudge and clean filters, and I've discovered
that they seem to completely break git-svn.  When trying to fetch
commits A and B from the SVN repos, it will fetch A, and then clean(A)
is committed to my repository.  Then when it tries to fetch B, it is
horribly confused - it complains of a checksum mismatch, since the
md5sums of the files in A in the SVN repos don't match up with the
md5sums of the files in the clean(A) commit in git land.  Is this a
known problem?  And, are there any work arounds other than just not
using filters when using git-svn?  Could git-svn be made to accept the
md5sum of *either* A or clean(A) instead?

Thanks!

~Matt

PS - Please CC me if possible; I'm not subscribed