def METHOD_NAME(key: str, commit_id: str) -> str:
    if commit_id == FIRST_COMMIT_ID:
        return "/".join(
            (
                key,
                ENCODED_CHUNK_NAMES_FOLDER,
                UNSHARDED_ENCODER_FILENAME,
            )
        )
    return "/".join(
        (
            "versions",
            commit_id,
            key,
            ENCODED_CHUNK_NAMES_FOLDER,
            UNSHARDED_ENCODER_FILENAME,
        )
    )