$ git clone -n https://src.fedoraproject.org/rpms/virt-v2v.git /var/lib/mock/f40-build-2289835-55911/root/chroot_tmpdir/scmroot/virt-v2v
Cloning into '/var/lib/mock/f40-build-2289835-55911/root/chroot_tmpdir/scmroot/virt-v2v'...
$ git fetch origin faab6c711a3b183d60b3f6bbd267e8ca3fac8bab:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/virt-v2v
 * [new ref]         faab6c711a3b183d60b3f6bbd267e8ca3fac8bab -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at faab6c7 New development branch version 2.5.1