$ git clone -n https://src.fedoraproject.org/rpms/kf6-kcmutils.git /var/lib/mock/f40-build-2399279-60549/root/chroot_tmpdir/scmroot/kf6-kcmutils
Cloning into '/var/lib/mock/f40-build-2399279-60549/root/chroot_tmpdir/scmroot/kf6-kcmutils'...
$ git fetch origin 6dd3fdf9fbdcd3d0e2ed3ca997d04a40480ad54e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kcmutils
 * [new ref]         6dd3fdf9fbdcd3d0e2ed3ca997d04a40480ad54e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6dd3fdf 5.249.0