Well, I assume you wouldn't submit a PR if it didn't look good to you, so the acronym is appropriate...

you have no idea (1) what some people do when some external force tires to make them contribute to opensource ...

1: ok, you probably do know as most people on HN probably do know

I thought it meant "Let's Get This Merge" like it was a play on "let's get this bread". I know it stands for "Looks Good To Me" now but I still prefer my reading :)

It's an ambiguous acronym. I've used it both ways.

All the front page Google results appear to say Looks Good To Me

https://www.dictionary.com/e/acronyms/lgtm/

https://www.urbandictionary.com/define.php?term=LGTM

https://www.freecodecamp.org/news/what-do-cryptic-github-com...

https://knowyourmeme.com/memes/lgtm

https://www.cyberdefinitions.com/definitions/LGTM.html

Urban Dictionary does have Let's Get This Merged as its second definition, but it's at a net of -121 points, whereas Looks Good To Me is at net 941, and was added 10 years earlier. That doesn't seem ambiguous to me.