git tag

Get all tags from remote repo

$ git fetch --all --tags

List all tags:

$git tag

Checkout tag

$ git checkout tags/_tag-name_ -b __branch-name__

do some changess here... or merge with latest branch

$ git merge branch_with_new_features

Create new tag

$ git tag vX.x

Push to remote Repo

$ git push origin vX.x 

ref: https://devconnected.com/how-to-checkout-git-tags/