該問題是由 git configure 配置時沒有設定 --with-curl --with-expat 造成。
參考：git INSTALL文件：
“libcurl” library is used by git-http-fetch and git-fetch. You might also want the “curl” executable for debugging purposes. If you do not use http:// or https:// repositories, you do not have to have them (use NO_CURL).
“expat” library; git-http-push uses it for remote lock management over DAV. Similar to “curl” above, this is optional (with NO_EXPAT).
CentOS的話，使用yum安裝curl開發相關庫後：
$ yum install libcurl-devel
重新配置編譯git即可。
參考：
http://stackoverflow.com/questions/8329485/git-clone-fatal-unable-to-find-remote-helper-for-https
http://rcmdnk.github.io/blog/2013/07/27/computer-cygwin-git/
轉載自：http://blog.csdn.net/robertsong2004/article/details/38904681