When you run git status ,git branch will be local devand remote branch that it is tracking compare ( origin/master), because origin/masternot changed, it is still current devbranch (and origin/dev) back 1 commit / change, so there will be prompt.
We want to do is to change the local devbranch to track the remote devbranch.
Solution (choose one):
①, run
git branch --set-upstream-to=origin/dev
②, when the additional push to the push command:--set-upstream
git push origin dev --set-upstream
(Reprinted from JavaEar , the original quote and describe principles for a more detailed explanation of the problem, with address: https://www.javaear.com/question/45460281.html )