SSL_connect: SSL_ERROR_SYSCALL in connection to github.com:443

Question

Since a few days I got an issue with Mac OS High Sierra 10.13.3 : When I run a git clone like git clone github.com/xxx.git failed it print:

Answer 1

1) Tried creating a new branch and pushing. Worked for a couple of times but faced the same error again.

2)Just ran these two statements before pushing the code. All I did was to cancel the proxy.

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

3) Faced the issue again after couple of weeks. I have updated homebrew and it got fixed