Hey Kent,
Thanks for letting me know.
You’re right — gitwhy.dev/install is broken right now, and that’s on us. On Mac, please use the command below:
brew install gitwhy-cli/tap/git-why
We’re fixing the install link and docs. Ìf any further assistance is needed, please email me at quan@gitwhy.dev or join our discord community: https://discord.gg/2X5X5XeFyT