$ git clone -n https://src.fedoraproject.org/rpms/libkmahjongg.git /var/lib/mock/f40-build-2096660-50411/root/chroot_tmpdir/scmroot/libkmahjongg
Cloning into '/var/lib/mock/f40-build-2096660-50411/root/chroot_tmpdir/scmroot/libkmahjongg'...
$ git fetch origin 6470c49d4e828760f87f1a9f28c0ba0da1afc989:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libkmahjongg
 * [new ref]         6470c49d4e828760f87f1a9f28c0ba0da1afc989 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6470c49 Fix devel dependencies