Step 1: Remove what you want with a hacksaw. If your wheeliebin will be in that narrow space between the fence and the house, cutting excess will reduce the trippping hazard, especially if you have to squeeze your way past the bin is on the way to the gas hot water service in the dark to relight the pilot light.
Step 2: Screw on the hose fitting, ready for the next step. If a hose is not connected, what will keep the water in? You might add a hose with a snap-close fitting on the other end as a simpler way to do this.