异常信息

git clone XXX Failed to connect to github.com port 443: Timed out

网络连接异常，可能是github的ip变动亦或是设置了代理。

清理代理

可能设置了代理，导致网络异常，清理代理：

git config --global --unset http.proxy
git config --global --unset https.proxy

ip地址变动

在线测试IP

修改hosts文件，window下路径一般为C:\Windows\System32\drivers\etc\hosts，添加或修改ip配置：

20.205.243.166 github.com

刷新DNS:

ipconfig /flushdns

git config 相关命令

帮助文档：

$ git config -help
usage: git config [<options>]

Config file location
    --global              use global config file
    --system              use system config file
    --local               use repository config file
    --worktree            use per-worktree config file
    -f, --file <file>     use given config file
    --blob <blob-id>      read config from given blob object

Action
    --get                 get value: name [value-pattern]
    --get-all             get all values: key [value-pattern]
    --get-regexp          get values for regexp: name-regex [value-pattern]
    --get-urlmatch        get value specific for the URL: section[.var] URL
    --replace-all         replace all matching variables: name value [value-pattern]
    --add                 add a new variable: name value
    --unset               remove a variable: name [value-pattern]
    --unset-all           remove all matches: name [value-pattern]
    --rename-section      rename section: old-name new-name
    --remove-section      remove a section: name
    -l, --list            list all
    --fixed-value         use string equality when comparing values to 'value-pattern'
    -e, --edit            open an editor
    --get-color           find the color configured: slot [default]
    --get-colorbool       find the color setting: slot [stdout-is-tty]

Type
    -t, --type <>         value is given this type
    --bool                value is "true" or "false"
    --int                 value is decimal number
    --bool-or-int         value is --bool or --int
    --bool-or-str         value is --bool or string
    --path                value is a path (file or directory name)
    --expiry-date         value is an expiry date

Other
    -z, --null            terminate values with NUL byte
    --name-only           show variable names only
    --includes            respect include directives on lookup
    --show-origin         show origin of config (file, standard input, blob, command line)
    --show-scope          show scope of config (worktree, local, global, system, command)
    --default <value>     with --get, use default value when missing entry

常用命令

设置全局配置：

git config --global http.proxy 127.0.0.1:2341

查询全局配置：

git config --get http.proxy

清理全局配置：

git config --unset http.proxy