if not (
            local_path.is_file() and (calc_checksum(irods_path) == calc_checksum(local_path))
        ):

# Will call

    if isinstance(filepath, IrodsPath):
        return filepath.checksum
    f_hash=sha256()
    memv=memoryview(bytearray(128*1024))
    with open(filepath, 'rb', buffering=0) as file:
        for item in iter(lambda : file.readinto(memv), 0):
            f_hash.update(memv[:item])
    return f"sha2:{str(base64.b64encode(f_hash.digest()), encoding='utf-8')}"