下载地址：http://git-scm.com/download
依赖：
$ yum install curl-devel expat-devel gettext-devel openssl-devel zlib-devel gcc perl-ExtUtils-MakeMaker
$ curl -O https://www.kernel.org/pub/software/scm/git/git-2.9.5.tar.gz
$ tar -zxf git-2.9.5.tar.gz
$ cd git-2.9.5
$ make prefix=/usr/local all
$ sudo make prefix=/usr/local install