brew update でエラー
brew updateしたら下記のようなエラーが発生 Error: homebrew-core is a shallow clone. homebrew-cask is a shallow clone. To `brew update`, first run: git -C /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core fetch --unshallow git -C /usr/local/Homebrew/Library/Taps/homebrew/homebrew-cask fetch --u…
