$ git clone -n https://src.fedoraproject.org/rpms/rakudo.git /var/lib/mock/f40-build-2114505-50675/root/chroot_tmpdir/scmroot/rakudo
Cloning into '/var/lib/mock/f40-build-2114505-50675/root/chroot_tmpdir/scmroot/rakudo'...
$ git fetch origin 67e4aec3125fd03cc89034ee37d5258dd170acf0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rakudo
 * [new ref]         67e4aec3125fd03cc89034ee37d5258dd170acf0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 67e4aec update to 2023.10