$ git clone -n https://src.fedoraproject.org/forks/churchyard/rpms/micropython.git /var/lib/mock/f38-build-side-42-init-devel-1050506-29762/root/chroot_tmpdir/scmroot/micropython
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1050506-29762/root/chroot_tmpdir/scmroot/micropython'...
$ git fetch origin c47fecf9750eb11436544a6c0c02ab65ad216ee1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/forks/churchyard/rpms/micropython
 * [new ref]         c47fecf9750eb11436544a6c0c02ab65ad216ee1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c47fecf riscv64: Add support for riscv64