Not really specific to D, but since there are git experts here: recently while trying to determine when a D bug was introduced, I checked out old revisions of druntime/phobos (detached HEAD state). This morning, I ran git pull on both repos with --ff-only, and now git insists that I'm ahead of upstream/master by 67 commits, but I don't understand where these commits are coming from, because git log shows everything is up-to-date and all the hashes match.
So I'm confused about what git status means by "ahead of upstream/master by 67 commits", because AFAIK I should be in sync? What's going on here? T -- Long, long ago, the ancient Chinese invented a device that lets them see through walls. It was called the "window".
