For HTTPS URLs, you need to make sure your proxy configuration ignore host setting in Eclipse includes the domain name of the GitHub Enterprise (on premise) private server, or it will try to contact the proxy every time (and fail code example

Example: For HTTPS URLs, you need to make sure your proxy configuration ignore host setting in Eclipse includes the domain name of the GitHub Enterprise (on premise) private server, or it will try to contact the proxy every time (and fail

git config --global --unset http.proxy