P.S.
I sometimes found it tricky to screw one of these plastic hose connectors onto the existing spigot, when the 3/4" mainline was stiff . (My threads are pretty beat up, and I can't kneel or squat very well).
Once I happen ed to put a Y fitting onto the spigot, tightened that, and then it was easy to screw anything else onto the (clean) threads of the Y. And I could "aim" it to a better angle.
Then I discovered that the extra Y was nice to have! I have the timer and pressure regulator and the irrigation hoses on one branch, but when I want the full 45 PSI pressure to blast pots clean, I have an extra outlet right there ready for use.