今天在使用git時發現一錯誤耽誤了我好久，具體問題是：
運行：git pull origin master
Counting objects: 3, done.
Writing objects: 100% (3/3), 193 bytes, done.
Total 3 (delta 0), reused 0 (delta 0)
error: insufficient permission for adding an object to repository database ./objects
fatal: failed to write object
error: unpack failed: unpack-objects abnormal exit
後來發現是./objects 的權限問題。
處理方法：
進入git庫目錄執行：
chmod
-R 777 objects/