Brew Update not working after mac 10.9

Question

First time running brew since 10.9 upgrade.

From the output below, should I just remove Library/Formula/ant.rb and Library/Formula/apple-gcc42.rb? Also, unclear why git pull is failing. Thanks for any help

525    [projects]$  brew --config HOMEBREW_VERSION: 0.9.4 ORIGIN: https://github.com/mxcl/homebrew.git HEAD: 27c26faf7b958de6028ad55be8ccc5a57b094d3f HOMEBREW_PREFIX: /usr/local HOMEBREW_CELLAR: /usr/local/Cellar CPU: 8-core 64-bit ivybridge OS X: 10.9-x86_64 Xcode: 5.0.2 GCC-4.2: build 5666 LLVM-GCC: build 0 Clang: 5.0 build 500 X11: N/A System Ruby: 1.8.7-358 Perl: /usr/bin/perl Python: /usr/bin/python Ruby: /Users/*****/.rvm/rubies/ruby-2.0.0-p195/bin/ruby 526    [projects]$  brew update error: The following untracked working tree files would be overwritten by merge:     Library/Formula/ant.rb     Library/Formula/apple-gcc42.rb Please move or remove them before you can merge. Aborting Error: Failure while executing: git pull -q origin refs/heads/master:refs/remotes/origin/master 

Answer 1

This fixed it for me

cd `brew --prefix`/Homebrew git fetch origin git reset --hard origin/master 

brew update worked fine after that

Answer 2

Solution

You might still find..

brew update not working after git pull origin master

Here what you need to do.

cd /usr/local git pull origin master brew install git

Now you might already have git on your System, but what this will do it that now.

Your broken brew update will automatically be updated before at first run..

Here is the link to the origin issue in HomeBrew. brew stuck