Im sorry, but wouldn't most developers have a large amount of code that fits this description? I likely have several mB of hacked python and bash scripts that were only intended to run once. But, I kept them in a repo because I occasionally would refer to an old script. But expecting a readme is a bit much, most of those scripts were lucky to get a descriptive file name, much less documentation. I hate doing documentation professionally, I'm certainly not stressing over it in my free time.

Given that I don’t, and am in a position to hire people tells me this isn’t as hard and fast as you present it.