### SUMMARY
```
  sha256sum:
    description:
      - If a SHA-256 checksum is passed to this parameter, the digest of the
        destination file will be calculated after it is downloaded to ensure
        its integrity and verify that the transfer completed successfully.
        This option is deprecated. Use C(checksum) instead.
```

There is no `module.deprecate` either for `sha256sum`.

the argument has been declared deprecated in commit b3b11fbce26 (2017)

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME
get_url

* ansible version: 2.10

os.remove(tmpsrc)
            module.fail_json(msg="failed to copy %s to %s: %s" % (tmpsrc, dest, to_native(e)),
                             exception=traceback.format_exc(), **result)
        result['changed'] = True
    else:
        result['changed'] = False
        if os.path.exists(tmpsrc):
            os.remove(tmpsrc)
    if checksum != '':
        destination_checksum = module.digest_from_file(dest, algorithm)
        if checksum != destination_checksum:
            os.remove(dest)
            module.fail_json(msg="The checksum for %s did not match %s; it was %s." % (dest, checksum, destination_checksum), **result)
    
    module.params['path'] = dest
    file_args = module.load_file_common_arguments(module.params)
    file_args['path'] = dest
    result['changed'] = module.set_fs_attributes_if_different(file_args, result['changed'])
    
    try:
        result['md5sum'] = module.md5(dest)
    except ValueError:
        result['md5sum'] = None
    if backup_file:
        result['backup_file'] = backup_file
    
    module.exit_json(msg=info.get('msg', ''), status_code=info.get('status', ''), **result)
if __name__ == '__main__':
    main()