force_checkpoint: TxDescriptor<
    {
        update: {
            block_roots_branch: FixedSizeBinary<32>[];
            block_roots_root: FixedSizeBinary<32>;
            current_sync_committee: {
                aggregate_pubkey: FixedSizeBinary<48>;
                pubkeys: FixedSizeArray<512, FixedSizeBinary<48>>;
            };
            current_sync_committee_branch: FixedSizeBinary<32>[];
            header: {
                body_root: FixedSizeBinary<32>;
                parent_root: FixedSizeBinary<32>;
                proposer_index: bigint;
                slot: bigint;
                state_root: FixedSizeBinary<32>;
            };
            validators_root: FixedSizeBinary<32>;
        };
    },
>

Used for pallet initialization and light client resetting. Needs to be called by the root origin.