$ git clone -n https://src.fedoraproject.org/rpms/plasma-systemsettings.git /var/lib/mock/f42-build-862544-170850/root/chroot_tmpdir/scmroot/plasma-systemsettings
Cloning into '/var/lib/mock/f42-build-862544-170850/root/chroot_tmpdir/scmroot/plasma-systemsettings'...
$ git fetch origin 7bccffb1ec8f6d184fa779e33dc0c03f73a97591:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-systemsettings
 * [new ref]         7bccffb1ec8f6d184fa779e33dc0c03f73a97591 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7bccffb 6.2.4