$ git clone -n https://src.fedoraproject.org/rpms/kf6-solid.git /var/lib/mock/f42-build-side-1-3504991-45986/root/chroot_tmpdir/scmroot/kf6-solid
Cloning into '/var/lib/mock/f42-build-side-1-3504991-45986/root/chroot_tmpdir/scmroot/kf6-solid'...
$ git fetch origin 1c60f569d396cf43d978d31e597f1fc9ba2b009d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-solid
 * [new ref]         1c60f569d396cf43d978d31e597f1fc9ba2b009d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1c60f56 6.13.0