github提交和克隆失败，无法连接

sourcetree提交和克隆，或者git bash clone/push都不行，无法连接

报错信息：

git -c diff.mnemonicprefix=false -c core.quotepath=false --no-optional-locks push -v --tags origin dev:dev
Pushing to github.com:wrui-easy/GitTest.git
kex_exchange_identification: read: Software caused connection abort
banner exchange: Connection to 140.82.113.4 port 22: Software caused connection abort
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

网上很多方法都试过了，重新生成rsa密钥，修改hosts，都没有用。请各位帮忙指点！

github不太稳定，你可以试试国内的gitee，或者csdn的git库。