$ git clone -n https://src.fedoraproject.org/rpms/LabPlot.git /var/lib/mock/f42-build-3403080-45134/root/chroot_tmpdir/scmroot/LabPlot
Cloning into '/var/lib/mock/f42-build-3403080-45134/root/chroot_tmpdir/scmroot/LabPlot'...
$ git fetch origin 6926ca76d32a781f99f313c4b1f89f982f572b68:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/LabPlot
 * [new ref]         6926ca76d32a781f99f313c4b1f89f982f572b68 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6926ca7 liborcus rebuild