For those who use Emacs, org-capture is probably the way to go: https://orgmode.org/manual/Capture.html#Capture
I mean, you can tortuously gin up some plaintext format by hand, or you can use Org mode; you can tortuously gin up a skin over git by hand, or you can use Magit; you can tortuously gin up a skin over wget/curl by hand, or you can just use eww.