yes i have found a way out 

follow the steps to install httrack in you mac os :-

1) copy the command and paste it in your terminal -
/bin/bash -c "$(curl -fsSL
<https://raw.githubusercontent.com/Homebrew/install/master/install.sh)">;
2)now copy this command and paste it again -
arch -x86_64 brew install httrack
3)To mirror a website run the command -
arch -x86_64 httrack <website-url>

your website is mirrored !

Have a good day,
Jasmine