錯誤如下：
pacman -S make gcc diffutils
:: 正在獲取軟件包......
錯誤：無法從 repo.msys2.org : Operation too slow. Less than 1 bytes/sec transferred the last 10 seconds
獲取文件 'binutils-2.30-1-x86_64.pkg.tar.xz'
解決辦法就是使用鏡像
/etc/pacman.d/mirrorlist.mingw32
Server = https://mirrors.tuna.tsinghua.edu.cn/msys2/mingw/i686
/etc/pacman.d/mirrorlist.mingw64
Server = https://mirrors.tuna.tsinghua.edu.cn/msys2/mingw/x86_64
/etc/pacman.d/mirrorlist.msys
Server = https://mirrors.tuna.tsinghua.edu.cn/msys2/msys/$arch
刷新
pacman -Syu
原文鏈接：https://blog.csdn.net/quantum7/java/article/details/105388653