### 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

if checksum_mismatch:
            force = True
    
    start = datetime.datetime.utcnow()
    tmpsrc, info = url_get(module, url, dest, use_proxy, last_mod_time, force, timeout, headers, tmp_dest)
    result['elapsed'] = (datetime.datetime.utcnow() - start).seconds
    result['src'] = tmpsrc
    
    
    if dest_is_dir:
        filename = extract_filename_from_headers(info)
        if not filename:
            
            
            
            filename = url_filename(info['url'])
        dest = os.path.join(dest, filename)
        result['dest'] = dest
    
    if not os.path.exists(tmpsrc):
        os.remove(tmpsrc)
        module.fail_json(msg="Request failed", status_code=info['status'], response=info['msg'], **result)
    if not os.access(tmpsrc, os.R_OK):
        os.remove(tmpsrc)
        module.fail_json(msg="Source %s is not readable" % (tmpsrc), **result)
    result['checksum_src'] = module.sha1(tmpsrc)
    
    if os.path.exists(dest):