在 Git 中修剪遠端分支

本文將展示如何修剪（清理）在遠端倉庫中刪除的遠端跟蹤分支。

例如，Alice 和 Bob 正在開發一個分支 feature/shared-branch。Bob 建立一個拉取請求，合併 feature/shared-branch，然後將其刪除。

她在 Alice 這邊執行 git pull origin feature/shared-branch。

$ git branch -a
* feature/shared-branch
  main
  remotes/origin/feature/shared-branch
  remotes/origin/main
$ git pull origin feature/shared-branch
fatal: couldn't find remote ref feature/shared-branch

儘管 remotes/origin/feature/shared-branch 出現在 git branch -a 下，執行 git pull origin feature/shared-branch 仍然會觸發錯誤，因為 feature/shared-branch 已被刪除遠端倉庫。

為了克服這個問題，Alice 應該清理 feature/shared-branch 的引用，它是 remotes/origin/feature/shared-branch。她可能會執行 git remote prune origin。

$ git remote prune origin
Pruning origin
URL: git@github.com:stwarts/git-demo.git
 * [pruned] origin/feature/shared-branch

git remote prune origin 執行檢查。遠端倉庫中不存在的遠端跟蹤分支將被刪除。

feature/shared-branch 已被 Bob 刪除。在 Alice 執行 git remote prune origin 後，它的遠端跟蹤分支 remotes/origin/feature/shared-branch 將在 Alice 機器中被刪除。