
You can use geolocalized Git mirrors to speed up Homebrew’s installation and brew update by setting HOMEBREW_BREW_GIT_REMOTE and/or HOMEBREW_CORE_GIT_REMOTE in your shell environment with this script:

You have to confirm everything it will do before it starts. It tells you exactly what it will do before it does it too. It is a careful script it can be run even if you have stuff installed in the preferred prefix already. This prefix is required for most bottles (binary packages) to be used. This script installs Homebrew to its default, supported, best prefix ( /usr/local for macOS Intel, /opt/homebrew for Apple Silicon and /home/linuxbrew/.linuxbrew for Linux) so that you don’t need sudo after Homebrew’s initial installation when you brew install. Instructions for a supported install of Homebrew are on the homepage.
