This repo is simply a sourced tap from an outdated version of homebrew to support the python@2 formula. This is due to python 2's End of Life (EOL) on Dec 31, 2019. You can create a tap from here and install python2 with ease.

In order to create a local tap, run the following command:

brew tap bluenove/python2

This will git pull the repo down into your local namespace. It will be stored in /usr/local/Homebrew/Library/Taps in case you wish to do some tomfoolery.

From there, you can install python2 as you would normally.

brew install bluenove/python2/python@2