Give a man a fire, he's warm for a day.
Set a man on fire, and he's warm for the rest of his life.
This is brilliant.
Terry Pratchett, RIP.
... the PR would do that as well
Not necessarily. PR on GitHub can be merged with the push of a button so it's more likely to be looked at only cursory before getting merged and therefore will be forgotten whereas when the author needs to retype it they will have a stronger memory of it and they remember where to go back and look next time