Question: how to change name of branch?
Answer: Rename your local branch. If you are on the branch you want to rename: git branch -m new-name. ... 
Delete the old-name remote branch and push the new-name local branch. git push origin :old-name new-name.
Reset the upstream branch for the new-name local branch. git push origin -u new-name. ... 
Rename. ... 
Track a new remote branch.