How can I use Homebrew to get gitx working on macOS Sierra?

Question

If I would try using the following command to install gitx on macOS Sierra or High Sierra:

brew install homebrew/cask/gitx # DOES NOT WORK on Sierra

then my attempt to run gitx would result an error like this:

objc[41181]: Objective-C garbage collection is no longer supported.

I already found this answer but it does not show how to install the rowanj fork using Homebrew.

Answer 1

The following command does the trick:

brew cask install rowanj-gitx

Credit goes to this comment on the answer referenced in the question.