When you create a new branch and push it to origin, you won't be tracking it. This means a git pull won't know its remote version.

Rails Long Term Support

Rails LTS provides security patches for old versions of Ruby on Rails (2.3, 3.2, 4.2 and 5.2)

• Prevents you from data breaches and liability risks
• Upgrade at your own pace
• Works with modern Rubies

Read more Show archive.org snapshot

You could use difficult commands to set up a branch's tracking but it's easier to just push it like this:

git push -u

From the documentation on git push Show archive.org snapshot :

-u, --set-upstream
For every branch that is up to date or successfully pushed, add upstream (tracking) reference, used by argument-less git-pull(1) and other commands. For more information, see branch..merge in git-config(1).