git更新后有時會提示沒更改的文件為更改狀態，嘗試checkout這些文件還是會報：

Encountered 2 file(s) that should have been pointers, but weren't......

和attributes文件中關于git-lfs的內容有關。

git rm .gitattributes
git reset --hard HEAD

https://www.v2ex.com/t/683636
https://tech-notes.maxmasnick.com/fixing-files-that-should-have-been-pointers-in-lfs-but-werent