$ git clone -n https://src.fedoraproject.org/rpms/virt-v2v.git /var/lib/mock/f40-build-1956232-25196/root/chroot_tmpdir/scmroot/virt-v2v
Cloning into '/var/lib/mock/f40-build-1956232-25196/root/chroot_tmpdir/scmroot/virt-v2v'...
$ git fetch origin a719f3009f459cf0c4ed36ef7d8279beaeb76b23:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/virt-v2v
 * [new ref]         a719f3009f459cf0c4ed36ef7d8279beaeb76b23 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a719f30 New upstream development version 2.5.6