`brew install` and `brew update` hang with error: 'refs/remotes/origin/master': unknown revision or path not in the working tree.

[Jon-Biz]

Bug report

Please note we will close your issue without comment if you delete, do not read or do not fill out the issue checklist below and provide ALL the requested information. If you repeatedly fail to use the issue template, we will block you from ever submitting issues to Homebrew again.

• ran brew update and can still reproduce the problem?
• ran brew doctor, fixed all issues and can still reproduce the problem?
• ran brew config and brew doctor and included their output with your issue?

What you were trying to do (and why)

A fresh install of homebrew on OSX.

What happened (include command output)

Installation hangs with the error:

error: Not a valid ref: refs/remotes/origin/master
fatal: ambiguous argument 'refs/remotes/origin/master': unknown revision or path not in the working tree.

brew update hangs the same error, fwiw. Unsurprising since it appears that /usr/local/bin/brew update --force --quiet appears to be the spot where the installed hangs.

Command output

Kates-Other-MBP% /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
Password:
==> This script will install:
/usr/local/bin/brew
/usr/local/share/doc/homebrew
/usr/local/share/man/man1/brew.1
/usr/local/share/zsh/site-functions/_brew
/usr/local/etc/bash_completion.d/brew
/usr/local/Homebrew
Press RETURN to continue or any other key to abort

==> /usr/bin/sudo /usr/sbin/chown Bumpant:admin /usr/local/Homebrew

==> Downloading and installing Homebrew...

HEAD is now at 7242cd647 Merge pull request #10357 from dtrodrigues/andor

error: Not a valid ref: refs/remotes/origin/master

fatal: ambiguous argument 'refs/remotes/origin/master': unknown revision or path not in the working tree.

Use '--' to separate paths from revisions, like this:

'git  [...] -- [...]'

^CFailed during: /usr/local/bin/brew update --force --quiet

What you expected to happen

Successful install without a fatal error.

Step-by-step reproduction instructions (by running brew commands)

Run the install command on a mac running Mojave 10.14.6

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

Output of brew config and brew doctor commands

Brew config

Kates-Other-MBP% brew config
HOMEBREW_VERSION: 2.7.5-74-g7242cd6
ORIGIN: https://github.com/Homebrew/brew
HEAD: 7242cd64743635d13d5f69fa3ae0718b2170e7da
Last commit: 34 minutes ago
Core tap ORIGIN: https://github.com/Homebrew/homebrew-core
Core tap HEAD: (none)
Core tap last commit: never
Core tap branch: HEAD
HOMEBREW_PREFIX: /usr/local
HOMEBREW_CASK_OPTS: []
HOMEBREW_MAKE_JOBS: 8
Homebrew Ruby: 2.6.3 => /usr/local/Homebrew/Library/Homebrew/vendor/portable-ruby/2.6.3_2/bin/ruby
CPU: octa-core 64-bit kabylake
Clang: 10.0 build 1001
Git: 2.23.0 => /usr/local/bin/git
Curl: 7.54.0 => /usr/bin/curl
macOS: 10.14.6-x86_64
CLT: 10.3.0.0.1.1562985497
Xcode: N/A

Brew doctor

Kates-Other-MBP% brew doctor
Please note that these warnings are just used to help the Homebrew maintainers
with debugging if you file an issue. If everything you use Homebrew for is
working fine: please don't worry or file an issue; just ignore this. Thanks!
Warning: A newer Command Line Tools release is available.

Update them from Software Update in System Preferences or run:

softwareupdate --all --install --force
If that doesn't show you an update run:

sudo rm -rf /Library/Developer/CommandLineTools

sudo xcode-select --install
Alternatively, manually download them from:

https://developer.apple.com/download/more/.
Warning: Unbrewed header files were found in /usr/local/include.

If you didn't put them there on purpose they could cause problems when

building Homebrew formulae, and may need to be deleted.
Unexpected header files:

/usr/local/include/node/js_native_api.h

/usr/local/include/node/js_native_api_types.h

/usr/local/include/node/libplatform/libplatform-export.h

/usr/local/include/node/libplatform/libplatform.h

/usr/local/include/node/libplatform/v8-tracing.h

/usr/local/include/node/node.h

/usr/local/include/node/node_api.h

/usr/local/include/node/node_api_types.h

/usr/local/include/node/node_buffer.h

/usr/local/include/node/node_object_wrap.h

/usr/local/include/node/node_version.h

/usr/local/include/node/openssl/aes.h

/usr/local/include/node/openssl/archs/BSD-x86/asm/crypto/buildinf.h

/usr/local/include/node/openssl/archs/BSD-x86/asm/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/BSD-x86/asm/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/BSD-x86/asm/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/BSD-x86/asm/include/progs.h

/usr/local/include/node/openssl/archs/BSD-x86/asm_avx2/crypto/buildinf.h

/usr/local/include/node/openssl/archs/BSD-x86/asm_avx2/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/BSD-x86/asm_avx2/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/BSD-x86/asm_avx2/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/BSD-x86/asm_avx2/include/progs.h

/usr/local/include/node/openssl/archs/BSD-x86/no-asm/crypto/buildinf.h

/usr/local/include/node/openssl/archs/BSD-x86/no-asm/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/BSD-x86/no-asm/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/BSD-x86/no-asm/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/BSD-x86/no-asm/include/progs.h

/usr/local/include/node/openssl/archs/BSD-x86_64/asm/crypto/buildinf.h

/usr/local/include/node/openssl/archs/BSD-x86_64/asm/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/BSD-x86_64/asm/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/BSD-x86_64/asm/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/BSD-x86_64/asm/include/progs.h

/usr/local/include/node/openssl/archs/BSD-x86_64/asm_avx2/crypto/buildinf.h

/usr/local/include/node/openssl/archs/BSD-x86_64/asm_avx2/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/BSD-x86_64/asm_avx2/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/BSD-x86_64/asm_avx2/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/BSD-x86_64/asm_avx2/include/progs.h

/usr/local/include/node/openssl/archs/BSD-x86_64/no-asm/crypto/buildinf.h

/usr/local/include/node/openssl/archs/BSD-x86_64/no-asm/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/BSD-x86_64/no-asm/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/BSD-x86_64/no-asm/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/BSD-x86_64/no-asm/include/progs.h

/usr/local/include/node/openssl/archs/VC-WIN32/asm/crypto/buildinf.h

/usr/local/include/node/openssl/archs/VC-WIN32/asm/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/VC-WIN32/asm/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/VC-WIN32/asm/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/VC-WIN32/asm/include/progs.h

/usr/local/include/node/openssl/archs/VC-WIN32/asm_avx2/crypto/buildinf.h

/usr/local/include/node/openssl/archs/VC-WIN32/asm_avx2/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/VC-WIN32/asm_avx2/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/VC-WIN32/asm_avx2/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/VC-WIN32/asm_avx2/include/progs.h

/usr/local/include/node/openssl/archs/VC-WIN32/no-asm/crypto/buildinf.h

/usr/local/include/node/openssl/archs/VC-WIN32/no-asm/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/VC-WIN32/no-asm/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/VC-WIN32/no-asm/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/VC-WIN32/no-asm/include/progs.h

/usr/local/include/node/openssl/archs/VC-WIN64-ARM/no-asm/crypto/buildinf.h

/usr/local/include/node/openssl/archs/VC-WIN64-ARM/no-asm/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/VC-WIN64-ARM/no-asm/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/VC-WIN64-ARM/no-asm/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/VC-WIN64-ARM/no-asm/include/progs.h

/usr/local/include/node/openssl/archs/VC-WIN64A/asm/crypto/buildinf.h

/usr/local/include/node/openssl/archs/VC-WIN64A/asm/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/VC-WIN64A/asm/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/VC-WIN64A/asm/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/VC-WIN64A/asm/include/progs.h

/usr/local/include/node/openssl/archs/VC-WIN64A/asm_avx2/crypto/buildinf.h

/usr/local/include/node/openssl/archs/VC-WIN64A/asm_avx2/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/VC-WIN64A/asm_avx2/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/VC-WIN64A/asm_avx2/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/VC-WIN64A/asm_avx2/include/progs.h

/usr/local/include/node/openssl/archs/VC-WIN64A/no-asm/crypto/buildinf.h

/usr/local/include/node/openssl/archs/VC-WIN64A/no-asm/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/VC-WIN64A/no-asm/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/VC-WIN64A/no-asm/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/VC-WIN64A/no-asm/include/progs.h

/usr/local/include/node/openssl/archs/aix-gcc/asm/crypto/buildinf.h

/usr/local/include/node/openssl/archs/aix-gcc/asm/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/aix-gcc/asm/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/aix-gcc/asm/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/aix-gcc/asm/include/progs.h

/usr/local/include/node/openssl/archs/aix-gcc/asm_avx2/crypto/buildinf.h

/usr/local/include/node/openssl/archs/aix-gcc/asm_avx2/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/aix-gcc/asm_avx2/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/aix-gcc/asm_avx2/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/aix-gcc/asm_avx2/include/progs.h

/usr/local/include/node/openssl/archs/aix-gcc/no-asm/crypto/buildinf.h

/usr/local/include/node/openssl/archs/aix-gcc/no-asm/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/aix-gcc/no-asm/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/aix-gcc/no-asm/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/aix-gcc/no-asm/include/progs.h

/usr/local/include/node/openssl/archs/aix64-gcc/asm/crypto/buildinf.h

/usr/local/include/node/openssl/archs/aix64-gcc/asm/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/aix64-gcc/asm/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/aix64-gcc/asm/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/aix64-gcc/asm/include/progs.h

/usr/local/include/node/openssl/archs/aix64-gcc/asm_avx2/crypto/buildinf.h

/usr/local/include/node/openssl/archs/aix64-gcc/asm_avx2/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/aix64-gcc/asm_avx2/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/aix64-gcc/asm_avx2/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/aix64-gcc/asm_avx2/include/progs.h

/usr/local/include/node/openssl/archs/aix64-gcc/no-asm/crypto/buildinf.h

/usr/local/include/node/openssl/archs/aix64-gcc/no-asm/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/aix64-gcc/no-asm/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/aix64-gcc/no-asm/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/aix64-gcc/no-asm/include/progs.h

/usr/local/include/node/openssl/archs/darwin-i386-cc/asm/crypto/buildinf.h

/usr/local/include/node/openssl/archs/darwin-i386-cc/asm/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/darwin-i386-cc/asm/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/darwin-i386-cc/asm/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/darwin-i386-cc/asm/include/progs.h

/usr/local/include/node/openssl/archs/darwin-i386-cc/asm_avx2/crypto/buildinf.h

/usr/local/include/node/openssl/archs/darwin-i386-cc/asm_avx2/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/darwin-i386-cc/asm_avx2/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/darwin-i386-cc/asm_avx2/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/darwin-i386-cc/asm_avx2/include/progs.h

/usr/local/include/node/openssl/archs/darwin-i386-cc/no-asm/crypto/buildinf.h

/usr/local/include/node/openssl/archs/darwin-i386-cc/no-asm/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/darwin-i386-cc/no-asm/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/darwin-i386-cc/no-asm/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/darwin-i386-cc/no-asm/include/progs.h

/usr/local/include/node/openssl/archs/darwin64-x86_64-cc/asm/crypto/buildinf.h

/usr/local/include/node/openssl/archs/darwin64-x86_64-cc/asm/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/darwin64-x86_64-cc/asm/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/darwin64-x86_64-cc/asm/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/darwin64-x86_64-cc/asm/include/progs.h

/usr/local/include/node/openssl/archs/darwin64-x86_64-cc/asm_avx2/crypto/buildinf.h

/usr/local/include/node/openssl/archs/darwin64-x86_64-cc/asm_avx2/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/darwin64-x86_64-cc/asm_avx2/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/darwin64-x86_64-cc/asm_avx2/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/darwin64-x86_64-cc/asm_avx2/include/progs.h

/usr/local/include/node/openssl/archs/darwin64-x86_64-cc/no-asm/crypto/buildinf.h

/usr/local/include/node/openssl/archs/darwin64-x86_64-cc/no-asm/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/darwin64-x86_64-cc/no-asm/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/darwin64-x86_64-cc/no-asm/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/darwin64-x86_64-cc/no-asm/include/progs.h

/usr/local/include/node/openssl/archs/linux-aarch64/asm/crypto/buildinf.h

/usr/local/include/node/openssl/archs/linux-aarch64/asm/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/linux-aarch64/asm/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/linux-aarch64/asm/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/linux-aarch64/asm/include/progs.h

/usr/local/include/node/openssl/archs/linux-aarch64/asm_avx2/crypto/buildinf.h

/usr/local/include/node/openssl/archs/linux-aarch64/asm_avx2/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/linux-aarch64/asm_avx2/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/linux-aarch64/asm_avx2/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/linux-aarch64/asm_avx2/include/progs.h

/usr/local/include/node/openssl/archs/linux-aarch64/no-asm/crypto/buildinf.h

/usr/local/include/node/openssl/archs/linux-aarch64/no-asm/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/linux-aarch64/no-asm/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/linux-aarch64/no-asm/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/linux-aarch64/no-asm/include/progs.h

/usr/local/include/node/openssl/archs/linux-armv4/asm/crypto/buildinf.h

/usr/local/include/node/openssl/archs/linux-armv4/asm/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/linux-armv4/asm/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/linux-armv4/asm/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/linux-armv4/asm/include/progs.h

/usr/local/include/node/openssl/archs/linux-armv4/asm_avx2/crypto/buildinf.h

/usr/local/include/node/openssl/archs/linux-armv4/asm_avx2/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/linux-armv4/asm_avx2/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/linux-armv4/asm_avx2/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/linux-armv4/asm_avx2/include/progs.h

/usr/local/include/node/openssl/archs/linux-armv4/no-asm/crypto/buildinf.h

/usr/local/include/node/openssl/archs/linux-armv4/no-asm/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/linux-armv4/no-asm/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/linux-armv4/no-asm/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/linux-armv4/no-asm/include/progs.h

/usr/local/include/node/openssl/archs/linux-elf/asm/crypto/buildinf.h

/usr/local/include/node/openssl/archs/linux-elf/asm/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/linux-elf/asm/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/linux-elf/asm/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/linux-elf/asm/include/progs.h

/usr/local/include/node/openssl/archs/linux-elf/asm_avx2/crypto/buildinf.h

/usr/local/include/node/openssl/archs/linux-elf/asm_avx2/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/linux-elf/asm_avx2/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/linux-elf/asm_avx2/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/linux-elf/asm_avx2/include/progs.h

/usr/local/include/node/openssl/archs/linux-elf/no-asm/crypto/buildinf.h

/usr/local/include/node/openssl/archs/linux-elf/no-asm/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/linux-elf/no-asm/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/linux-elf/no-asm/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/linux-elf/no-asm/include/progs.h

/usr/local/include/node/openssl/archs/linux-ppc/asm/crypto/buildinf.h

/usr/local/include/node/openssl/archs/linux-ppc/asm/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/linux-ppc/asm/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/linux-ppc/asm/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/linux-ppc/asm/include/progs.h

/usr/local/include/node/openssl/archs/linux-ppc/asm_avx2/crypto/buildinf.h

/usr/local/include/node/openssl/archs/linux-ppc/asm_avx2/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/linux-ppc/asm_avx2/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/linux-ppc/asm_avx2/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/linux-ppc/asm_avx2/include/progs.h

/usr/local/include/node/openssl/archs/linux-ppc/no-asm/crypto/buildinf.h

/usr/local/include/node/openssl/archs/linux-ppc/no-asm/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/linux-ppc/no-asm/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/linux-ppc/no-asm/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/linux-ppc/no-asm/include/progs.h

/usr/local/include/node/openssl/archs/linux-ppc64/asm/crypto/buildinf.h

/usr/local/include/node/openssl/archs/linux-ppc64/asm/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/linux-ppc64/asm/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/linux-ppc64/asm/include/openssl/opensslconf.h

/usr/local/include/node/openssl/archs/linux-ppc64/asm/include/progs.h

/usr/local/include/node/openssl/archs/linux-ppc64/asm_avx2/crypto/buildinf.h

/usr/local/include/node/openssl/archs/linux-ppc64/asm_avx2/crypto/include/internal/bn_conf.h

/usr/local/include/node/openssl/archs/linux-ppc64/asm_avx2/crypto/include/internal/dso_conf.h

/usr/local/include/node/openssl/archs/linux-ppc64/asm_avx2/include/openssl/opensslconf.h

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/usr/local/include/node/zlib.h
Warning: Some taps are not on the default git origin branch and may not receive

updates. If this is a surprise to you, check out the default branch with:

git -C $(brew --repo homebrew/core) checkout
Warning: Broken symlinks were found. Remove them with brew cleanup:

/usr/local/share/man/man3/*

Kates-Other-MBP% brew cleanup

Pruned 1 symbolic links and 3 directories from /usr/local

Kates-Other-MBP% brew update

error: Not a valid ref: refs/remotes/origin/master

fatal: ambiguous argument 'refs/remotes/origin/master': unknown revision or path not in the working tree.

Use '--' to separate paths from revisions, like this:

'git  [...] -- [...]'

[gromgit]

A fresh install of homebrew on OSX.

Everything you've posted suggests that you're actually overwriting an existing install that has a b0rken core tap. That's unnecessary, since the following is less disruptive:

rm -fr $(brew --repo homebrew/core)  # because you can't `brew untap homebrew/core`
brew tap homebrew/core

[Jon-Biz]

Thanks!

While I'm pretty certain that this was a fresh install (the machine is newish), I'm not so sure that the initial install attempt didn't break for some other (normal) reason that I failed to note.

[derekstavis]

I just experienced the same issue in a brand new macOS install. Steps to reproduce were copying and pasting the installer snippet from brew.sh.

I think that in my case this happened due to internet issues, as cloning homebrew-core in my broadband connection was taking more than an hour and ended up failing with this error.

Running this as suggested above solved the issue:

rm -fr $(brew --repo homebrew/core)  # because you can't `brew untap homebrew/core`
brew tap homebrew/core

[MrBenFTW]

Just got this issue too, installed today (14th feb 2021)

edit 1: seems to be working now..

[samazgor]

A fresh install of homebrew on OSX.

Everything you've posted suggests that you're actually overwriting an existing install that has a b0rken core tap. That's unnecessary, since the following is less disruptive:

rm -fr $(brew --repo homebrew/core)  # because you can't `brew untap homebrew/core`
brew tap homebrew/core

Thanx a lot.