Unable to connect to a repository at URL 'https://xxxxx/svn/include'
Server SSL certificate verification failed: certificate has expired, issuer is not trusted
打开终端，随便打几个svn的命令，比如svn update, 然后终端会给你弹出错误消息，表示验证失败。
比如 svn update,
弹出 Error validating server certificate for 'https://192.168.0.XX:XXX':
- The certificate is not issued by a trusted authority. Use the
fingerprint to validate the certificate manually!
- The certificate hostname does not match.
Certificate information:
- Hostname: WIN-11181526
- Valid: from Mon, 18 Nov 2013 08:00:53 GMT until Thu, 16 Nov 2023 08:00:53 GMT
- Issuer: WIN-11181526
- Fingerprint: 84:10:b8:1c:58:6c:0f:78:42:d9:68:66:18:a4:c6:cc:fb:91:83:27
(R)eject, accept (t)emporarily or accept (p)ermanently?
弹出提示告诉你需要重新验证，R表示不打算验证，T和P表示临时和总是相信。你可以输入P，这个时候弹出提示让你输入密码， 如 Authentication realm: <https://192.168.0.XX:XXX> VisualSVN Server
Password for 'liuj':
这个时候你只要输入密码就可以了（会验证2次）
然后就会执行你最早的svn命令了（本例中的是svn update）