brew 报错
fatal: couldn't find remote ref refs/heads/master
Error: Fetching /opt/homebrew/Library/Taps/osx-cross/homebrew-avr failed!
Error: Some taps failed to update!
The following taps can not read their remote branches:
osx-cross/avr
This is happening because the remote branch was renamed or deleted.
Reset taps to point to the correct remote branches by running `brew tap --repair`
解决：
run
brew tap --repair
