# From master

## Rename local branch master to v1.1
git branch -m v1.1
## Delete old master
git push origin :master v1.1
## Reset the upstream branch for the v1.1 local branch
git push origin -u v1.1

# From next

## Rename local branch next to master
git branch -m master
## Delete old next
git push origin :next master
## Reset the upstream branch for the master local branch
git push origin -u master