If Homebrew was updated on Aug 10-11th 2016 and brew update always says Already up-to-date. you need to run: cd "$(brew --repo)" && git fetch && git reset --hard origin/master && brew update.

Please follow the general troubleshooting steps first:

• Ran brew update and retried your prior step?
• Ran brew doctor, fixed as many issues as possible and retried your prior step?
• If you’re seeing permission errors tried running sudo chown -R $(whoami) $(brew --prefix)? I thought this -^ step is not needed anymore and root can own folder structure again? Is this still the case ?

Bug reports:

kind of regression bug for me 😦

Since a certain brew version, don’t remember which one (AFAIR the version claiming root can own /usr/local/ again) i had troubles

$ brew update
fatal: Cannot update paths and switch to branch 'stable' at the same time.
Did you intend to checkout 'refs/tags/1.0.8' which can not be resolved as commit?
fatal: Needed a single revision
invalid upstream refs/tags/1.0.8
Already up-to-date.

before it was same message with version 1.0.9 … I had a tag 1.0.9 in refs/tags/.I issued a git reset --hard to overwrite local version and it was ok . But now this bug comes back somehow ?

I do not make local changes to homebrew or whatever. I don’t understand what’s happening.

I also enable debugging see attached file

out.txt

thanks for your help