Homebrew update error: Failure while executing: git pull -q origin refs/heads/master:refs/remotes/origin/master

Question

When I try to run brew update, I see: error: The following untracked working tree files would be overwritten by merge:, then a large list of packages, and then I get the error:

Error: Failure while executing: git pull -q origin refs/heads/master:refs/remotes/origin/master.

What can I do about this?

Thanks!

Answer 1

Are you installed the beta of El Capitan?

Read this: https://github.com/Homebrew/homebrew/issues/40519