mac brew install error

Error: No available formula with the name "pygame" 

==> Searching for a previously deleted formula (in the last month)...

Warning: homebrew/core is shallow clone. To get complete history run:

  git -C "$(brew --repo homebrew/core)" fetch --unshallow

Error: No previously deleted formula found.

==> Searching for similarly named formulae...

==> Searching local taps...

Error: No similarly named formulae found.

==> Searching taps...

==> Searching taps on GitHub...

Error: No formulae found in taps.

使用如下命令：

rm -rf /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core; brew update