git: checkout and track remote branch

Note: in recent git versions, it is enough to do git pull and git checkout branch-name to check out and start tracking the remote branch.

Before, it was necessary to use the -t (--track) flag to do that:

#creates and checks out "branch-name" branch that tracks "origin/branch-name"
git checkout -t origin/branch-name

The relevant part of the checkout docs:

git checkout [<branch>]

…

If <branch> is not found but there does exist a tracking branch in exactly one remote (call it <remote>) with a matching name and --no-guess is not specified, treat as equivalent to

$ git checkout -b <branch> --track <remote>/<branch>

Tags: git