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.