$ git clone -n https://src.fedoraproject.org/forks/u2fsdgvkx1/rpms/samba.git /var/lib/mock/f41-build-side-1-3045530-37591/root/chroot_tmpdir/scmroot/samba
Cloning into '/var/lib/mock/f41-build-side-1-3045530-37591/root/chroot_tmpdir/scmroot/samba'...
$ git fetch origin 6898f26a809ea892c79a957e46d81cdd7d2657f8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/forks/u2fsdgvkx1/rpms/samba
 * [new ref]         6898f26a809ea892c79a957e46d81cdd7d2657f8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6898f26 Disable etcd, as it does not support riscv64 yet