Build `hub` HEAD with Go

The `hub` 2.2.0 branch has been [merged into master](https://github.com/github/hub/pull/641).
HEAD requires Go and a different script to build.
The 1.x stable build should still work before 2.2.0 is officially released.

Closes #33407.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>