$ git clone -n https://src.fedoraproject.org/rpms/zabbix.git /var/lib/mock/f45-build-39308-733/root/chroot_tmpdir/scmroot/zabbix
Cloning into '/var/lib/mock/f45-build-39308-733/root/chroot_tmpdir/scmroot/zabbix'...
$ git fetch origin b8b938371abbfbce3f49576f83604316b028120e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/zabbix
 * [new ref]         b8b938371abbfbce3f49576f83604316b028120e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b8b9383 Rebuilt for libxml-2.15.4