git fetch 失敗提示insufficient permission for adding an object to repository db

參考：http://stackoverflow.com/questions/6448242/git-push-error-insufficient-permission-for-adding-an-object-to-repository-datab

執行 git fetch，提示

insufficient permission for adding an object to repository database

解決辦法：

cd .git/objects
ls -al
sudo chown -R yourname:yourgroup *