Because my dev branch is a sub-branch of master, they don't share the same commitline:
Here's how I created dev as a sub-branch of master:
git checkout -b dev master
After some minor fixes, my master ended up a few commits ahead of my dev branch. I should have been on my dev branch first, but I didn't realize I was on master until I had already pushed the changes.
To fix that, I did a "git pull" to bring my dev up to speed with master. So far, so good.
My Problem
Now when I push commits to my dev branch, it no longer appears as a sub-branch of master. As you can see, their commitline has now merged:
How do I make dev a sub-branch again?