# Set upstream when pushing to remote
git push -u origin topic
# Set upstream without pushing it
# with option -u / --set-upstream-to
git branch -u origin/topic
git branch --set-upstream-to=origin/topic
git branch --set-upstream-to=upstream/foo
git branch --set-upstream-to=upstream/foo foo
$ git checkout --track origin/dev
Branch dev set up to track remote branch dev from origin.
Switched to a new branch 'dev'
git branch --set-upstream foo upstream/foo
git branch -u upstream/foo foo
git branch -u upstream/foo