As reported in https://github.com/localstack/localstack/issues/6659#issuecomment-1630932643_, `HeadObject` does not respect `ChecksumMode`. 


```shell
at 09:31:57 ➜ AWS_DEFAULT_REGION=us-west-1 aws --endpoint-url=http://localhost:4566 s3api create-bucket --bucket test-bucket --create-bucket-configuration LocationConstraint=us-west-1
{
    "Location": "http://test-bucket.s3.localhost.localstack.cloud:4566/"
}

at 09:32:13 ➜ aws --endpoint-url=http://localhost:4566 s3api put-object --bucket test-bucket --key file.json --body README.md --checksum-algorithm SHA256
{
    "ETag": "\"4bb2f1387449d690bff6336ea255909c\"",
    "ChecksumSHA256": "bzOikXXMUqRTCrpVq7Pt7LjJ0fjR3ccUfM19S/gnfqA="
}

# SHA256 missing here
at 09:32:20 ➜ aws --endpoint-url=http://localhost:4566 s3api head-object --bucket test-bucket --key file.json --checksum-mode Enabled
{
    "AcceptRanges": "bytes",
    "LastModified": "2023-07-11T13:32:15+00:00",
    "ContentLength": 1455,
    "ETag": "\"4bb2f1387449d690bff6336ea255909c\"",
    "ContentType": "binary/octet-stream",
    "Metadata": {}
}
```

Note the equivalent response from S3 actual includes the SHA256 value

```shell
at 10:21:23 ➜ aws s3api head-object --bucket test-bucket --key file.json --checksum-mode Enabled
{
    "AcceptRanges": "bytes",
    "Expiration": "expiry-date=\"Thu, 13 Jul 2023 00:00:00 GMT\", rule-id=\"all\"",
    "LastModified": "2023-07-11T14:21:09+00:00",
    "ContentLength": 1956,
    "ChecksumSHA256": "bj7fqCqtaF95M1ULwQRDJuHbL/Xd9NVMH6pua9OINcc=",
    "ETag": "\"f4be535d45019a4408dd5369986919f8\"",
    "ContentEncoding": "",
    "ContentType": "binary/octet-stream",
   
    "Metadata": {},
    
}
```

_Originally posted by @bdurrani in https://github.com/localstack/localstack/issues/6659#issuecomment-1630932643_
            
# Boto 
        # aws_
        # Test 
        _key = "data"
        body = "Hello\r\n\r\n\r\n\r\n"
        headers = {
            "Authorization": aws_stack.mock_aws_request_headers("s3")["Authorization"],
            "Content-Type": "audio/mpeg",
            "X-Amz-Content-Sha256": "STREAMING-AWS4-HMAC-SHA256-PAYLOAD",
            "X-Amz-Date": "20190918T051509Z",
            "X-Amz-Decoded-Content-Length": str(len(body)),
        }
        data = (
            "d;chunk-signature=af5e6c0a698b0192e9aa5d9083553d4d241d81f69ec62b184d05c509ad5166af\r\n"
            f"{body}\r\n0;chunk-signature=f2a50a8c0ad4d212b579c2489c6d122db88d8a0d0b987ea1f3e9d081074a5937\r\n"
        )
        # put 
        url = f"{config.service_url('s3')}/{s3_bucket}/{_key}"
        .put(url, data, headers=headers, verify=False)
        # get 
        downloaded_ = aws_client.s3.get_(Bucket=s3_bucket, Key=_key)
        download_file_ = to_str(downloaded_["Body"].read())
        assert len(body) == len(str(download_file_))
        assert body == str(download_file_)
    @pytest.mark.only_localstack
    @pytest.mark.xfail(
        reason="Not implemented in other providers than stream",
        condition=not STREAM_S3_PROVIDER,
    )
    def test_put__chunked_newlines_with_checksum(self, s3_bucket, aws_client):