This MH-47G has a thick, long rod at the bottom left front. What's the purpose of this thing?
This is the In flight refueling probe, which can be used for refueling while the helicopter is airborne:
(image source: pinterest.com)
It is almost 9 meters long to make sure the rotors do not hit the refueling drogue. You can see it in action in the following picture:
(image source: chinook-helicopter.com)