Ref: https://dougdefrank.wordpress.com/2018/02/28/vs-code-fixing-git-certificate-issues/
git config --system http.sslBackend schannel
git config --system http.sslBackend schannel
Step 1: Stop IBM HTTP Server.
Step 2: Turn on IBM HTTP Server verbose logging for SSL
Append the LogLevel directive to httpd.conf:
LogLevel debug ibm_ssl:trace8
LogLevel debug
Append SSLTrace directive to httpd.conf (no argument)
SSLTrace
Step 3: Start HTTP Server.
The instructions to install and use xorg-server on macOS via Homebrew: Install Homebrew (if you haven't already): /bin/bash -c ...