[njovin]

...and then PM's can have the same wonderful experiences as engineers: finding the exact commit where a major change was made 6+ months ago by a former employee, with a comment like 'updated behavior' that gives zero insight into what led to the change or why it was made.

[ralferoo]

Since working a one company that required it, ever since I've adopted the policy of including a link to the bug / feature ticket for every commit.

Even for my personal projects, if I'm fixing something, I'll manage them with JIRA and will create a 1 line bug ticket just before committing so that I have an ID to reference. I also have a long-lasting tickets for general refactoring / code cleanup without a bug fix.