After git deletes the branch remotely, the local git branch-a can still see the workaround.

Use the git branch-a command to view all local and remote branches (git branch-r can view only remote branches)
Found that many of the branches that have been deleted in the remote repository are still visible locally.

$ 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

Using the command git remote show origin, you can see the remote address, the remoting branch, and the corresponding relationship between the local branch and other information.

$ git Remote Show origin * Remote Origin Fetch url:https://xxx@gitlab.com/xxx/xxx.git Push Url:https://xxx@gitla B.com/xxx/xxx.git HEAD branch:task_develop Remote branches:master TR                        acked 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 p Rune ' 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 L Ocal ref configured for ' git push ': Task_develop pushes to task_develop (up to date)

At this point we can see those branches that the remote repository does not already exist, and, as prompted, use the Git Remote Prune origin command:

$ git remote prune origin

pruning Origin
url:https://xxx@gitlab.com/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

This removes the branches that do not exist in the remote repository.