下面是一个简单的答案，我使用git客户机得到了这个答案：

从计算机中完全删除存储库，然后再次签出。

不要玩弄风险脚本。

我想出了这个bash脚本。它总是保持分支的发展，qa，master。

git-clear() {
  git pull -a > /dev/null

  local branches=$(git branch --merged | grep -v 'develop' | grep -v 'master' | grep -v 'qa' | sed 's/^\s*//')
  branches=(${branches//;/ })

  if [ -z $branches ]; then
    echo 'No branches to delete...'
    return;
  fi

  echo $branches

  echo 'Do you want to delete these merged branches? (y/n)'
  read yn
  case $yn in
      [^Yy]* ) return;;
  esac

  echo 'Deleting...'

  git remote prune origin
  echo $branches | xargs git branch -d
  git branch -vv
}

基于Git提示：删除旧的本地分支，这看起来类似于jason.rickman的解决方案。为此，我使用Bash实现了一个名为Git-gone的自定义命令：

$ git gone
usage: git gone [-pndD] [<branch>=origin]
OPTIONS
  -p  prune remote branch
  -n  dry run: list the gone branches
  -d  delete the gone branches
  -D  delete the gone branches forcefully

EXAMPLES
git gone -pn    prune and dry run
git gone -d     delete the gone branches

git gone-pn结合了修剪和列出“goned”分支：

$ git gone -pn
  bport/fix-server-broadcast         b472d5d2b [origin/bport/fix-server-broadcast: gone] Bump modules
  fport/rangepos                     45c857d15 [origin/fport/rangepos: gone] Bump modules

然后，您可以使用git-gone-d或git-gone-d来扣动扳机。

笔记

我使用的正则表达式是“$BRANCH/.*：gone]”，其中$BRANCH通常是源代码。如果您的Git输出本地化为法语等，这可能不会起作用。Sebastian Wiesner还为Windows用户将其移植到Rust。那个也叫git gone。

我喜欢使用管道，因为它使命令更容易阅读。

如果您想删除除master之外的所有分支，这是我的解决方案。

git branch | grep -v master | xargs -n 1 git branch -D

要删除符合条件的其他分支，请修改第一个和第二个块。

git branch --merged | grep feature_name | xargs -n 1 git branch -D

我已经用GitPython编写了一个Python脚本来删除远程不存在的本地分支。

    import git
    import subprocess
    from git.exc import GitCommandError
    import os

    def delete_merged_branches():
        current_dir = input("Enter repository directory:")
        repo = git.Repo(current_dir)
        git_command = git.Git(current_dir)

        # fetch the remote with prune, this will delete the remote references in local.
        for remote in repo.remotes:
            remote.fetch(prune=True)
        
        local_branches = [branch.name for branch in repo.branches]
        deleted_branches = []

        # deleted_branches are the branches which are deleted on remote but exists on local.
        for branch in local_branches:
            try:
                remote_name = 'origin/'+ branch
                repo.git.checkout(remote_name)
            except GitCommandError:
            # if the remote reference is not present, it means the branch is deleted on remote.
                deleted_branches.append(branch)
            
        for branch in deleted_branches:
            print("Deleting branch:"+branch)
            git_command.execute(["git", "branch", "-D",branch])

    
        # clean up the work flow.
        repo.git.checkout('master')
        repo.git.pull()

    if __name__ == '__main__':
        delete_merged_branches()

希望有人觉得它有用，如果我错过了什么，请添加评论。

我发现基于Powershell的解决方案比这里的许多实现更清晰。

# prune deleted remoted branches
git fetch -p

# get all branches and their corresponding remote status
# deleted remotes will be marked [gone]
git branch -v |
  #find ones marked [gone], capture branchName
  select-string -Pattern '^  (?<branchName>\S+)\s+\w+ \[gone\]' | 
  foreach-object{ 
     #delete the captured branchname.
     git branch -D $_.Matches[0].Groups['branchName']
  }