Mac OS x 10.8 solves the issue of hg failure to download https protocol website code in Mac OS X 10.8, using hg clone https: xxxx.org, there will be warning, mainly due to security authentication issues, to avoid this problem, follow these steps: 1. Enter the command line mode and execute the following command to generate an authentication file. Do not worry about the problem. Remember not to download the authentication file on the network: www.2cto.com [plain] openssl req-new-x509-extensions v3_ca-keyout/dev/null-out dummycert. in pem-days 3650, A dummycert is generated. pem, 2 copy the authentication file to the/etc directory: www.2cto.com [plain] sudo cp dummycert. pem/etc/hg-dummy-cert.pem 3 create profile: [plain] vi/etc/mercurial/hgrc Add the following content: [plain] [web] cacerts =/etc/hg-dummy-cert.pem 4 try again clone a repo, hg clone https://xxx.xxx problem solving, closed test successful Appendix: Mercurial: http://mercurial.berkwood.com/binaries/Mercurial-2.1.2-py2.7-macosx10.7.zip (3.17 M)