Brew Update nie działa po Mac 10.9

Po raz pierwszy uruchomiony napar od wersji 10.9.

Czy z poniższego wyjścia powinienem usunąć Library / Formula / ant.rb i Library / Formula / apple-gcc42.rb? Nie jest też jasne, dlaczego git pull zawodzi. Dzięki za pomoc

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

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