$ git clone -n https://src.fedoraproject.org/rpms/virt-v2v.git /var/lib/mock/f40-build-1405928-23562/root/chroot_tmpdir/scmroot/virt-v2v
Cloning into '/var/lib/mock/f40-build-1405928-23562/root/chroot_tmpdir/scmroot/virt-v2v'...
$ git fetch origin 7fb40c9e669e66bfb83103c3230a522f8d4e5f3d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/virt-v2v
 * [new ref]         7fb40c9e669e66bfb83103c3230a522f8d4e5f3d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7fb40c9 New upstream development version 2.5.4