結論
- バーミッション変える
- brew untap する
エラー内容
% brew update
error: cannot open .git/FETCH_HEAD: Permission denied
Error: Failed to update tap: homebrew/dupes
error: cannot open .git/FETCH_HEAD: Permission denied
Error: Failed to update tap: josegonzalez/php
error: cannot open .git/FETCH_HEAD: Permission denied
対処
brew untap homebrew/dupes
brew untap josegonzalez/php
上記をやると、以下のエラーもなくなる
error: cannot open .git/FETCH_HEAD: Permission denied