$ git clone -n https://src.fedoraproject.org/rpms/kmahjongg.git /var/lib/mock/f41-build-side-1-2751517-31107/root/chroot_tmpdir/scmroot/kmahjongg
Cloning into '/var/lib/mock/f41-build-side-1-2751517-31107/root/chroot_tmpdir/scmroot/kmahjongg'...
$ git fetch origin b81b7a39d87832ec8ba2b2f9d052e8239f0692b1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kmahjongg
 * [new ref]         b81b7a39d87832ec8ba2b2f9d052e8239f0692b1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b81b7a3 24.08.1