$ git clone -n https://src.fedoraproject.org/rpms/nqp.git /var/lib/mock/f40-build-2087979-50162/root/chroot_tmpdir/scmroot/nqp
Cloning into '/var/lib/mock/f40-build-2087979-50162/root/chroot_tmpdir/scmroot/nqp'...
$ git fetch origin cb2a6d37c41df5ac0150dec81c41ae11d00133e4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nqp
 * [new ref]         cb2a6d37c41df5ac0150dec81c41ae11d00133e4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cb2a6d3 setup packit automation