git远程删除分支后，本地git branch -a 依然能看到的解决办法。

1. $ git branch -a
2.  
3. movtop
4. task_develop
5. * weibo
6. remotes/origin/HEAD -> origin/task_develop
7. remotes/origin/develop
8. remotes/origin/fix_composer_repositories_type
9. remotes/origin/join_weixin_module
10. remotes/origin/master
11. remotes/origin/mining-backup
12. remotes/origin/movtop
13. remotes/origin/right
14. remotes/origin/schedule_dev
15. remotes/origin/stuff_web_fix
16. remotes/origin/task_develop
17. remotes/origin/task_idea
18. remotes/origin/task_temp
19. remotes/origin/task_yqj
20. remotes/origin/weibo
21. 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。

1. $ git remote show origin
2.  
3. * remote origin
4. Fetch URL: https://xxx@gitlab.com/xxx/xxx.git
5. Push URL: https://xxx@gitlab.com/xxx/xxx.git
6. HEAD branch: task_develop
7. Remote branches:
8. master tracked
9. mining-backup tracked
10. refs/remotes/origin/develop stale (use 'git remote prune' to remove)
11. refs/remotes/origin/fix_composer_repositories_type stale (use 'git remote prune' to remove)
12. refs/remotes/origin/join_weixin_module stale (use 'git remote prune' to remove)
13. refs/remotes/origin/movtop stale (use 'git remote prune' to remove)
14. refs/remotes/origin/right stale (use 'git remote prune' to remove)
15. refs/remotes/origin/schedule_dev stale (use 'git remote prune' to remove)
16. refs/remotes/origin/stuff_web_fix stale (use 'git remote prune' to remove)
17. refs/remotes/origin/task_temp stale (use 'git remote prune' to remove)
18. refs/remotes/origin/weibo stale (use 'git remote prune' to remove)
19. task_develop tracked
20. task_idea tracked
21. task_yqj tracked
22. weixin_temp tracked
23. Local branches configured for 'git pull':
24. movtop merges with remote movtop
25. task_develop merges with remote task_develop
26. weibo merges with remote weibo
27. Local ref configured for 'git push':
28. 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：

1. $ git remote prune origin
2.  
3. Pruning origin
4. URL: https://xxx@gitlab.com/xxx/xxx.git
5. * [pruned] origin/develop
6. * [pruned] origin/fix_composer_repositories_type
7. * [pruned] origin/join_weixin_module
8. * [pruned] origin/movtop
9. * [pruned] origin/right
10. * [pruned] origin/schedule_dev
11. * [pruned] origin/stuff_web_fix
12. * [pruned] origin/task_temp
13. * [pruned] origin/weibo

这样就删除了那些远程仓库不存在的分支。