解决国内使用brew更新软件时报错： fatal: unable to access 'github.com/Homebrew/ho…': LibreSSL SSL_connect: SSL_ERROR_SYSCALL in connection to github.com:443
vim ~/.zshrc
export HOMEBREW_BREW_GIT_REMOTE=https://mirrors.ustc.edu.cn/brew.git
export HOMEBREW_CORE_GIT_REMOTE=https://mirrors.ustc.edu.cn/homebrew-core.git
export HOMEBREW_BOTTLE_DOMAIN=https://mirrors.ustc.edu.cn/homebrew-bottles/
source .zshrc
