$ git clone -n https://src.fedoraproject.org/rpms/python-Traits.git /var/lib/mock/f40-build-2339341-59643/root/chroot_tmpdir/scmroot/python-Traits
Cloning into '/var/lib/mock/f40-build-2339341-59643/root/chroot_tmpdir/scmroot/python-Traits'...
$ git fetch origin 8b6137592c27c62e27252809463b4c051a58c6ac:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-Traits
 * [new ref]         8b6137592c27c62e27252809463b4c051a58c6ac -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8b61375 Update to 6.4.3