问题真多啊 ！！！

• 解决方式 见 1. / 2. / 3 . / 4. / 5.

remote: Enumerating objects: 290323, done.
remote: Counting objects: 100% (473/473), done.
remote: Compressing objects: 100% (253/253), done.
error: RPC failed; curl 92 HTTP/2 stream 5 was not closed cleanly: CANCEL (err 8)
error: 638 bytes of body are still expected
fetch-pack: unexpected disconnect while reading sideband packet
fatal: early EOF
fatal: fetch-pack: invalid index-pack output
Failed during: /usr/bin/git fetch --quiet --progress --force origin
** 1.  git config --global http.version HTTP/1.1 **

remote: Enumerating objects: 290323, done.
remote: Counting objects: 100% (473/473), done.
remote: Compressing objects: 100% (253/253), done.
error: RPC failed; curl 18 transfer closed with outstanding read data remaining
error: 8177 bytes of body are still expected
fetch-pack: unexpected disconnect while reading sideband packet
fatal: early EOF
fatal: fetch-pack: invalid index-pack output
Failed during: /usr/bin/git fetch --quiet --progress --force origin** 2.  git config --global http.lowSpeedLimit 0 **
** 3.  git config --global http.lowSpeedTime 999999 **

fatal: unable to access 'https://github.com/Homebrew/brew/': Failed to connect to github.com port 443 after 75001 ms: Couldn't connect to server
Failed during: /usr/bin/git fetch --quiet --progress --force origin** 4. git config --global --unset http.proxy **  

remote: Enumerating objects: 290333, done.
remote: Counting objects: 100% (483/483), done.
remote: Compressing objects: 100% (259/259), done.
error: RPC failed; curl 18 transfer closed with outstanding read data remaining
error: 10670 bytes of body are still expected
fetch-pack: unexpected disconnect while reading sideband packet
fatal: early EOF
fatal: fetch-pack: invalid index-pack output
Failed during: /usr/bin/git fetch --quiet --progress --force origin
** 5. git config --global http.postBuffer 12244288000 **