how do i watch the upstream branch in git code example

Example 1: git bash upstream branch change

git branch --set-upstream-to=origin/branch

Example 2: how to check upstream git

$ git branch -vv
  main   aaf02f0 [main/master: ahead 25] Some other commit
* master add0a03 [jdsumsion/master] Some commit

Example 3: check upstream

git remote show origin