windows電腦重裝系統，去官網下載了最新的git安裝，一路next下來，打開bash按老路子設置，生成公鑰
git config --global user.name "yourname"
git config --global user.email "your@email.com"
ssh-keygen -t rsa -C "your@email.com"
把公鑰添加到阿里雲，clone代碼時拉不下來，報錯。
Unable to negotiate with **** port 22: no matching host key type found. Their offer: ssh-rsa
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
查看自己是開發者權限，重置一遍公鑰再添加也不行，去網上找方法，介紹這種情況的原因就是新的ssh客戶端不支持ssh-rsa算法，要修改本地配置重新使用ssh-rsa算法。
具體做法：到當前用戶目錄下的.ssh文件中創建config文件（config沒有后綴），使用記事本打開添加如下
Host *
HostkeyAlgorithms +ssh-rsa
PubkeyAcceptedKeyTypes +ssh-rsa
參考鏈接：https://blog.csdn.net/gongjin28_csdn/article/details/120783931
https://ttys3.dev/post/openssh-8-8-p1-no-matching-host-key-type-found-their-offer-ssh-rsa/