$ git clone -n https://src.fedoraproject.org/rpms/kf6-solid.git /var/lib/mock/f42-build-863198-171506/root/chroot_tmpdir/scmroot/kf6-solid
Cloning into '/var/lib/mock/f42-build-863198-171506/root/chroot_tmpdir/scmroot/kf6-solid'...
$ git fetch origin d621c049a68b43abb45b027233fbf740534ac55c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-solid
 * [new ref]         d621c049a68b43abb45b027233fbf740534ac55c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d621c04 Frameworks 6.9