自动拉取本地Git仓库最新的分支版本
当本地有多个参与的项目需要更新拉取最新分支代码时，每个项目中都要执行 git pull 命令也是一件很繁琐的事情。所以一时兴起，用Golang实现了一个自动拉取Git项目最新分支版本的程序。
正所谓：Sharpening your axe will not delay your job of chopping wood.
由于原始项目涉及到一些原公司内部项目文件，所以此版本是经过整理后的开源版本（以下示例中的项目名称仅供参考）。
./gitupdate -bd=./test -od=my_proxy -bc=5 -ck=true
-bd-defalut current path指定要检索的基目录-od-only one or some dir name mutiple between with ,设置只检索基目录下的一个目录或多个目录-bc-pull branch count default 3获取最近提交分支总数-ed-exclude one or some dir name mutiple between with ,排除基目录下的某一个或多个目录-ck-verify directory filtering results检查模式，仅验证目录筛选结果
设置检索的基目录为 ./test ，设置只检索基目录下的 celery 项目目录：
./gitupdate -bd=./test -od=celery
➜ ./gitupdate -bd=./my_project
basepath: ./my_project ; oneDirName:
检索到目录: my_project/logger
检索到目录: my_project/client_lib
检索到目录: my_project/options
检索到目录: my_project/abc_loger
[my_project/logger my_project/client_lib my_project/options my_project/abc_loger]
start range
Start for path: my_project/logger
↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓
Switched to branch 'master'
Your branch is up to date with 'origin/master'.
Already up to date.
↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑
Start for path: my_project/client_lib
↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓
Switched to branch 'master'
Your branch is up to date with 'origin/master'.
From ssh://the_company/my_project/client_lib
2a4c8fe..4ad287f master -> master
2a4c8fe..4ad287f master -> origin/master
warning: fetch updated the current branch head.
fast-forwarding your working tree from
commit 2a4c8fe9101ee1d5738336ce01e5de2ea90776a9.
Already up to date.
↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑
Start for path: my_project/options
↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓
Already on 'master'
Your branch is up to date with 'origin/master'.
Already up to date.
↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑
Start for path: my_project/abc_loger
↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓
Switched to branch 'master'
Your branch is up to date with 'origin/master'.
Already up to date.
↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑
$ git for-each-ref --sort=-committerdate --format='%(committerdate:short) %(refname:short)' --count=15 refs/remotes/origin/
执行结果如：
2019-02-22 origin/login-aaa
2018-11-28 origin/login-bbb
2018-11-21 origin/login-ccc
2018-09-20 origin/vvv-ddd
2018-09-06 origin/vvv-eee
2018-08-08 origin/vvv-fff
2018-07-25 origin/release_0.6
2018-07-04 origin/zzz-hhh
2018-06-14 origin/zzz-kkk
2018-04-17 origin/HCC-181
2018-04-16 origin/master
2018-04-16 origin/HEAD
2018-03-29 origin/develop
对以上命令进行调整，将输出内容更改：
获取远端分支的具体分支名 refs/remotes/origin/
git for-each-ref --sort=-committerdate --format='%(refname:short)' --count=3 refs/remotes/origin/
➜ git for-each-ref --sort=-committerdate --format='%(refname:short)' --count=3 refs/remotes/origin/
origin/login-aaa
origin/login-bbb
origin/login-ccc
获取本地分支的分支名称，可以使用 refs/heads/ :
git for-each-ref --sort=-committerdate --format='%(refname:short)' --count=3 refs/heads/
➜ git for-each-ref --sort=-committerdate --format='%(refname:short)' --count=3 refs/heads/
login-aaa
login-bbb
login-ccc
git branch --sort=-committerdate
git branch --sort=-committerdate --format='%(committerdate:short) %(refname:short)'
git for-each-ref --sort=-committerdate --format='%(refname:short)' --count=3 refs/heads/
heads：描述当前仓库所有本地分支
tags：描述当前仓库的tag信息
remotes：remotes文件夹将所有由 git remote 命令创建的所有远程分支存储为单独的子目录
- Last Updated: 2019-03-28