$ git clone -n https://src.fedoraproject.org/rpms/kf6-kconfig.git /var/lib/mock/f41-build-860836-169221/root/chroot_tmpdir/scmroot/kf6-kconfig
Cloning into '/var/lib/mock/f41-build-860836-169221/root/chroot_tmpdir/scmroot/kf6-kconfig'...
$ git fetch origin b609a3ea95331b040a3a09c492902a5412e1819e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kconfig
 * [new ref]         b609a3ea95331b040a3a09c492902a5412e1819e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b609a3e 6.8.0