I don't know if your faucet is the same as mine, but right at the end of the hose is a black fitting. This fitting screws into the base of the faucet head. It might be pretty tight, I just grabbed my pliers to get a good grip on the fitting (wrap with a towel to avoid damage) and gave the head a good twist counter clockwise. It was tough, but it came off.
2014 Jay Flight 28 BHBE
2015 RAM 2500 6.4L HEMI, Tradesman 4x4, 3.73
Blue Ox SwayPro (BXW 1503)
Upgraded from an REI internal frame backpack and a Eureka 1/2 dome tent!