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介绍一下 reflog

九瓴科技一面

基本点
  1. reflog 其实是 reference log 的缩写，相当于 git 操作的日志
  2. 可以通过 reflog 恢复删除的分支、提交的误操作

运行 git reflog 查看日志：

> git reflog

ed7c138 (HEAD -> main, origin/main, origin/HEAD) HEAD@{0}: checkout: moving from demo to main
b273aa8 (demo) HEAD@{1}: checkout: moving from main to demo
ed7c138 (HEAD -> main, origin/main, origin/HEAD) HEAD@{2}: checkout: moving from demo to main
b273aa8 (demo) HEAD@{3}: commit: 🚧 chore: Remove mdnice.css file to streamline styles and improve project organization
e9d0937 HEAD@{4}: checkout: moving from main to demo
ed7c138 (HEAD -> main, origin/main, origin/HEAD) HEAD@{5}: commit: 🚧 chore: Remove draft blog posts on programming experiences and learning English to streamline content and improve organization

每一行操作的含义：

  • ed7c138 是 commit hash
  • HEAD@{0} 是当前分支的指针
  • checkout: moving from demo to main 是操作
  • HEAD@{0}: checkout: moving from demo to main 是操作的日志

比如要恢复误删除的分支：

git checkout -b new-branch-for-feature <commit hash>