Does any distro read through 100% of the source-code of a package before adding it to its repo?

https://sh.itjust.works/post/19232395

Does any distro read through 100% of the source-code of a package before adding it to its repo? - sh.itjust.works

Explain your username, please. I have a hard time with someone using that handle making posts in here.
But you next, please.