删除 Git 远程分支删除后本地遗留的垃圾分支信息

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使用 git branch -a 命令可以查看所有本地分支和远程分支（使用 git branch -r 可以只查看远程分支）。

发现很多在远程仓库已经删除的分支在本地依然可以看到。

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$ git branch -a

  movtop
  task_develop
* weibo
  remotes/origin/HEAD -> origin/task_develop
  remotes/origin/develop
  remotes/origin/fix_composer_repositories_type
  remotes/origin/join_weixin_module
  remotes/origin/master
  remotes/origin/mining-backup
  remotes/origin/movtop
  remotes/origin/right
  remotes/origin/schedule_dev
  remotes/origin/stuff_web_fix
  remotes/origin/task_develop
  remotes/origin/task_idea
  remotes/origin/task_temp
  remotes/origin/task_yqj
  remotes/origin/weibo
  remotes/origin/weixin_temp

使用命令 git remote show origin ，可以查看 remote 地址，远程分支，还有本地分支与之相对应关系等信息。

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$ git remote show origin

* remote origin
  Fetch URL: https://[email protected]/xxx/xxx.git
  Push  URL: https://[email protected]/xxx/xxx.git
  HEAD branch: task_develop
  Remote branches:
    master                                             tracked
    mining-backup                                      tracked
    refs/remotes/origin/develop                        stale (use 'git remote prune' to remove)
    refs/remotes/origin/fix_composer_repositories_type stale (use 'git remote prune' to remove)
    refs/remotes/origin/join_weixin_module             stale (use 'git remote prune' to remove)
    refs/remotes/origin/movtop                         stale (use 'git remote prune' to remove)
    refs/remotes/origin/right                          stale (use 'git remote prune' to remove)
    refs/remotes/origin/schedule_dev                   stale (use 'git remote prune' to remove)
    refs/remotes/origin/stuff_web_fix                  stale (use 'git remote prune' to remove)
    refs/remotes/origin/task_temp                      stale (use 'git remote prune' to remove)
    refs/remotes/origin/weibo                          stale (use 'git remote prune' to remove)
    task_develop                                       tracked
    task_idea                                          tracked
    task_yqj                                           tracked
    weixin_temp                                        tracked
  Local branches configured for 'git pull':
    movtop       merges with remote movtop
    task_develop merges with remote task_develop
    weibo        merges with remote weibo
  Local ref configured for 'git push':
    task_develop pushes to task_develop (up to date)

此时我们可以看到那些远程仓库已经不存在的分支。根据提示，使用 git remote prune origin 命令。

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$ git remote prune origin

Pruning origin
URL: https://[email protected]/xxx/xxx.git
 * [pruned] origin/develop
 * [pruned] origin/fix_composer_repositories_type
 * [pruned] origin/join_weixin_module
 * [pruned] origin/movtop
 * [pruned] origin/right
 * [pruned] origin/schedule_dev
 * [pruned] origin/stuff_web_fix
 * [pruned] origin/task_temp
 * [pruned] origin/weibo

这样就删除了那些远程仓库不存在的分支。