Camco’s outside water faucet solves that dilemma with a lightweight plastic faucet that attaches between your water supply and your RV, and also allows your water hose to hang straight down without kinking where it enters your RV.
With the extra faucet you don’t have to shut off the water, disconnect the water supply hose, connect the outside hose, then reverse the process when you are finished. Also, it doesn’t deprive your RV of water while you are disconnected.
The faucet can also be used as a pressure relief valve when disconnecting your water supply from the RV.
You can find the faucet at Amazon.