$ git clone -n https://src.fedoraproject.org/rpms/plasma-systemsettings.git /var/lib/mock/f42-build-side-1-3584275-46892/root/chroot_tmpdir/scmroot/plasma-systemsettings
Cloning into '/var/lib/mock/f42-build-side-1-3584275-46892/root/chroot_tmpdir/scmroot/plasma-systemsettings'...
$ git fetch origin 8be0f8a72d1637258bb086be3c0bdad815044275:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-systemsettings
 * [new ref]         8be0f8a72d1637258bb086be3c0bdad815044275 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8be0f8a 6.4.2