The selected answer is absolutely correct, however it did not leave me with the latest commit/pushes ...
So for me:
git reset --hard dev/jobmanager-tools
git pull ( did not work as git was not sure what branch i wanted)
Since I know I want to temporarily set my upstream branch for a few weeks to a specific branch ( same as the one i switched to / checked out earlier and did a hard reset on )
So AFTER reset
git branch --set-upstream-to=origin/dev/jobmanager-tools
git pull
git status ( says--> on branch dev/jobmanager-tools