Update compiled version, how?

I compiled appinventor by following the steps in github:

How to update it when a new version is available?

We tag versions of App Inventor in the repository, so if you run git fetch upstream --tags (assuming our repo is a remote called upstream) you can fetch all of the versions of App Inventor and then check out a particular version, e.g., git checkout v185 will check out the sources corresponding to nb185 (sans MIT branding).

git checkout
Your branch is up to date with 'origin/master'.

git fetch upstream --tags
fatal: 'upstream' does not appear to be a git repository
fatal: Could not read from remote repository.

I follow steps described here to make upstream work

After update, does it need to be compiled again with ant?