1. 下载geekery repo文件（root权限）

cd /etc/yum.repos.d/
wget http://geekery.altervista.org/geekery-el6-x86_64.repo 

2. 到http://packages.sw.be/rpmforge-release 下载合适到rpm包

  rpmforge-release-0.5.3-1.el6.rf.x86_64.rpm

3. 到http://rpm.pbone.net/ 搜索rpm epel-release

  epel-release-6-8.1.noarch.rpm

4. 安装 rpm

  rpm -ivh rpmforge-release-0.5.3-1.el6.rf.x86_64.rpm

  rpm -ivh epel-release-6-8.1.noarch.rpm

5. yum -y install git

大功告成

git --version
git version 1.7.1

参考文档：http://blog.slogra.com/post-176.html 2012-4-18