Switching Homebrew to China Mirrors

Tencent Cloud mirror (newly added, covers most open-source mirrors): https://mirrors.cloud.tencent.com/

# Tencent Cloud Homebrew Mirror
cd "$(brew --repo)"
git remote set-url origin https://mirrors.cloud.tencent.com/homebrew/brew.git/

cd "$(brew --repo)"

# USTC Mirror
git remote set-url origin git://mirrors.ustc.edu.cn/brew.git

# Coding Mirror
git remote set-url origin https://git.coding.net/homebrew/homebrew.git

Restoring the default source:

cd "$(brew --repo)"

git remote set-url origin https://github.com/Homebrew/brew