1. First go to the local installation of homebrew
cd /usr/local/Homebrew/
2. Homebrew 2.5 remove the option to install formulas directly from git repos so we need to checkout an older version
git checkout 2.3.0
3. Install openssl latest 1.0.x version
HOMEBREW_NO_AUTO_UPDATE=1 brew install https://github.com/tebelorg/Tump/releases/download/v1.0.0/openssl.rb
4. Go back to current version of homebrew
git checkout -
4. Tell brew to use the old version of openssl this way you can chose wich version to use if you have both intalled
brew switch openssl 1.0.2t
