It wasn't a Sarmat at all. What you read is wrong, though the Sarmat can be equipped with hypersonic penetrators. The Russian code name for what they shot is "Oreshnik" and it was an intermediate-range ballistic missile. Patriots are not designed to intercept these things, though they might try. The more appropriate defense system would be THAAD (Terminal High Altitude Area Defense).
It wasn't a Sarmat at all. What you read is wrong, though the Sarmat can be equipped with hypersonic penetrators. The Russian code name for what they shot is "Oreshnik" and it was an intermediate-range ballistic missile. Patriots are not designed to intercept these things, though they might try. The more appropriate defense system would be THAAD (Terminal High Altitude Area Defense).