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_
            
)
        with 
            aws_client.s3.get_(Bucket=bucket_name, Key=_key)
        e.match("InvalidObjectState")
        snapshot.match("get__invalid_state", e.value.response)
        response = aws_client.s3.restore_(
            Bucket=bucket_name,
            Key=_key,
            RestoreRequest={
                "Days": 30,
                "GlacierJobParameters": {
                    "Tier": "Bulk",
                },
            },
        )
        snapshot.match("restore_", response)
        # AWS 
        response = aws_client.s3.head_(Bucket=bucket_name, Key=_key)
        if 'ongoing-request="false"' in response.get("Restore", ""):
            # if t
            restore_bucket_name = f"bucket-{short_uid()}"
            s3_create_bucket(Bucket=restore_bucket_name)
            aws_client.s3.copy_(
                CopySource={"Bucket": bucket_name, "Key": _key},
                Bucket=restore_bucket_name,
                Key=_key,
            )
            response = aws_client.s3.get_(Bucket=restore_bucket_name, Key=_key)
            assert "etag" in response.get("ResponseMetadata").get("HTTPHeaders")
class TestS3StaticWebsiteHosting: