That knot comes in handy so often.

Years ago, my clothesline came apart (it had pinch clamps that failed to grab the line tight enough) and I used a Trucker's Hitch along with Prusik knots to pull the clothesline close enough together to reattach it.

I now only buy clotheslines that come with the mini winch.

https://www.animatedknots.com/prusik-knot