$ git clone -n https://src.fedoraproject.org/rpms/nordugrid-arc-nagios-plugins.git /var/lib/mock/f40-build-59086279-6570958/root/chroot_tmpdir/scmroot/nordugrid-arc-nagios-plugins
Cloning into '/var/lib/mock/f40-build-59086279-6570958/root/chroot_tmpdir/scmroot/nordugrid-arc-nagios-plugins'...
$ git fetch origin 10b20efe741d97d8ee4a15124e3f19a6b9650a36:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nordugrid-arc-nagios-plugins
 * [new ref]         10b20efe741d97d8ee4a15124e3f19a6b9650a36 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 10b20ef Version 3.1.1