gitlab ci 执行流水线 Job 返回如下错误：
Reinitialized existing Git repository in /home/gitlab-runner/builds/AXzjdXyZ/0/root/blog/.git/
fatal: git fetch-pack: expected shallow list
fatal: The remote end hung up unexpectedly
原因是 centos 7 git 版本太老不持之新 API，需要升级一下 git：
#安装源
yum install http://opensource.wandisco.com/centos/7/git/x86_64/wandisco-git-release-7-2.noarch.rpm
#安装git
yum install git
#更新git
yum update git