install.sh 执行异常，有包 404

[Aiurvie]

异常信息：

HTTP status 404 fetching https://mirrors.163.com/cygwin/x86_64/release/grep/grep-3.8-2.tar.xz
download error in unattended_mode: 4 retries remaining.
HTTP status 404 fetching https://mirrors.163.com/cygwin/x86_64/release/grep/grep-3.8-2.tar.xz
download error in unattended_mode: 3 retries remaining.
HTTP status 404 fetching https://mirrors.163.com/cygwin/x86_64/release/grep/grep-3.8-2.tar.xz
download error in unattended_mode: 2 retries remaining.
HTTP status 404 fetching https://mirrors.163.com/cygwin/x86_64/release/grep/grep-3.8-2.tar.xz
download error in unattended_mode: 1 retry remaining.
HTTP status 404 fetching https://mirrors.163.com/cygwin/x86_64/release/grep/grep-3.8-2.tar.xz
download error in unattended_mode: out of retries

@我翻遍了文件，找不到该修改哪个位置😅