$ git clone -n http://fedora.riscv.rocks:3000/rpms/isomd5sum.git /var/lib/mock/f40-build-796589-140740/root/chroot_tmpdir/scmroot/isomd5sum
Cloning into '/var/lib/mock/f40-build-796589-140740/root/chroot_tmpdir/scmroot/isomd5sum'...
$ git fetch origin 4efa34f9c568779639162ffffcb891e0ffe6fd81:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/isomd5sum
 * [new ref]         4efa34f9c568779639162ffffcb891e0ffe6fd81 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4efa34f Add support for riscv64