Put the cloned folder into the downloaded macOS Installer files folder (i.e.:
gibMacOS/macOS Downloads/publicrelease/xxx-xxxxx blah blah blah)
python3 <drag and drop PackAppWin.py here>
The script should be packing your files to a new folder call
You will be asked for getting the 7z.exe location. It is located in
C:\Program Files (x86)\7zip
Drag and drop the 7z.exe to the window and press enter. The script should continue to run.
When it is done, proceed to next part.