This is true when you can reference the commit to an issue. Then, seeing the simple commit message you can select if you want to dig up what happened by reading up the comments at the issue.
On the other hand it really gets into my nerves when people don't use the task/issue/whatever manager system appropriately. Recently, I lost a couple of days trying to figure out how to compile a c++ framework because the other guy didn't document his pipeline. In general I'm really disappointed by the majority of my colleagues for the lack of comments inside and outside of our codebase and this is a persistent issue, at all the companies I worked for. Me along with other similarly irritated people, always ask for documentation if it is not given.