$ git clone -n http://fedora.riscv.rocks:3000/rpms/mlir.git /var/lib/mock/f41-build-855705-167318/root/chroot_tmpdir/scmroot/mlir
Cloning into '/var/lib/mock/f41-build-855705-167318/root/chroot_tmpdir/scmroot/mlir'...
$ git fetch origin 0be293ffd3003ddd38853ffa04dab64b61ce0cf7:KOJI_FETCH_HEAD
fatal: remote error: upload-pack: not our ref 0be293ffd3003ddd38853ffa04dab64b61ce0cf7
$ git reset --hard 0be293ffd3003ddd38853ffa04dab64b61ce0cf7
fatal: Could not parse object '0be293ffd3003ddd38853ffa04dab64b61ce0cf7'.