The command is only implemented on the dedicated server or debug servers, so i cannot tell for sure what exactly 'bhit' does. But its either some form of telemetry or debug.
The command sends the player index that got hit on the prediction engine, the bullet fire origin and the angles relative to the target that got hit.
For now the command draws the bullet trajectory if it hits a player.
This commit also fixes the 'Unknown command: bhit' message.