Results in our testing suggest the redirect is not supported, although other clients e.g. curl & s3cmd do. Redirect should be supported per https://docs.aws.amazon.com/AmazonS3/latest/dev/RESTRedirect.html#RESTRedirect100Continue. Pointers confirming support or lack of support in jclouds source would be of value.
S3RedirectionRetryHandler handles 301 and 307.
jclouds support the 307 redirect. All 3xx response codes are intercepted here, then processed, by default (unless a provider defines its own redirection retry handler) here.