}

	userDefined["etag"] = r.MD5CurrentHexString()
	kind, _ := crypto.IsEncrypted(userDefined)
	if opts.PreserveETag != "" {
		if !opts.ReplicationRequest {
			userDefined["etag"] = opts.PreserveETag
		} else if kind != crypto.S3 {
			// if we have a replication request
			// and SSE-S3 is specified do not preserve
			// the incoming etag.