importing git repo where root of tree moved leaves ghosts

[Sam Hartman]

With 0.13.0, I find that when I
    git clone git://git.project-moonshot.org/mech_eap.git
    cd mech_eap
    git fast-export debian -- |bzr fast-import /tmp/t

/tmp/t/debian has several files that are not actually in the root.
What seems to have happened is that bzr-fastimport is dealing poorly with the situation where the root of the repository moved down a level.
including move/copy detection in the git fast-export doesn't help.

Doing a git fast-export --all produces even more unfortunate results (crashes on the fast import)
t