SHELL

error: Not a valid ref: refs/remotes/origin/master

rm -f /usr/local/Homebrew/.git/refs/remotes/origin/master.lock

error: Not a valid ref: refs/remotes/origin/master homebrew

rm -rf /usr/local/bin/brew
rm -rf /usr/local/share/doc/homebrew
rm -rf /usr/local/share/man/man1/brew.1
rm -rf /usr/local/share/zsh/site-functions/_brew
rm -rf /usr/local/etc/bash_completion.d/brew
rm -rf /usr/local/Homebrew