[BUG] git-svn returning "Incomplete data: Delta source ended unexpectedly"

I run a SVN -> Git mirror which fetches & rebases with git-svn and pushes the result to GitHub:

    http://github.com/avar/openstreetmap-mirror/blob/master/josm-mirror.sh

Something about what that script is doing corrupted the git-svn repository, likely due to a git-svn bug. Now when I do git svn fetch on 1.7.1:

    $ git svn fetch
    Incomplete data: Delta source ended unexpectedly at
/usr/lib/git-core/git-svn line 5061

I re-cloned the repository and started running my mirror again from that. But it would be nice if we could track this bug down.

Here's a copy of the repository:

    http://v.nix.is/~avar/josm.old.tar.gz

Unpacking it and running git svn fetch will yield the same error on another box I have with 1.7.1.