$ git clone -n https://github.com/xcp-ng-rpms/net-snmp.git /var/lib/mock/v8.3-incoming-9190-27993/root/chroot_tmpdir/scmroot/net-snmp
Cloning into '/var/lib/mock/v8.3-incoming-9190-27993/root/chroot_tmpdir/scmroot/net-snmp'...
$ git fetch origin 17edaeb11e3fecf047159ec05e49c05880945271:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/net-snmp
 * [new ref]         17edaeb11e3fecf047159ec05e49c05880945271 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 17edaeb Deleting an unused patch