$ tox -e local-homebrew-macos-standard -- config.status
local-homebrew-macos-standard: commands[0] worktree-green> bash -c 'if [ ! -d /Users/mkoeppe/s/sage/sage-rebasing/.tox/local-homebrew-macos-standard/Library/Caches ]; then mkdir -p /Users/mkoeppe/s/sage/sage-rebasing/.tox/Caches && mkdir -p /Users/mkoeppe/s/sage/sage-rebasing/.tox/local-homebrew-macos-standard/Library && ln -sf /Users/mkoeppe/s/sage/sage-rebasing/.tox/Caches /Users/mkoeppe/s/sage/sage-rebasing/.tox/local-homebrew-macos-standard/Library/; fi'
local-homebrew-macos-standard: commands[1] worktree-green> bash -c 'if [ -n "" ]; then sudo xcode-select -s /Applications/Xcode_.app; fi;'
local-homebrew-macos-standard: commands[2] worktree-green> bash -c 'if [ ! -x /Users/mkoeppe/s/sage/sage-rebasing/.tox/local-homebrew-macos-standard/homebrew/bin/brew ]; then mkdir -p /Users/mkoeppe/s/sage/sage-rebasing/.tox/local-homebrew-macos-standard/homebrew && cd /Users/mkoeppe/s/sage/sage-rebasing/.tox/local-homebrew-macos-standard/homebrew && curl -L https://github.com/Homebrew/brew/tarball/master | tar xz --strip 1 ; fi'
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
100 3307k  100 3307k    0     0  2327k      0  0:00:01  0:00:01 --:--:-- 4159k
local-homebrew-macos-standard: commands[3] worktree-green> bash -c 'case "" in 1|y*|Y*);; *) export PATH="build/bin:$PATH" && PACKAGES=$(sage-get-system-packages homebrew $(sage-package list --has-file=spkg-configure.m4 :standard:) _bootstrap      ); /Users/mkoeppe/s/sage/sage-rebasing/.tox/local-homebrew-macos-standard/homebrew/bin/brew install $PACKAGES; /Users/mkoeppe/s/sage/sage-rebasing/.tox/local-homebrew-macos-standard/homebrew/bin/brew upgrade $PACKAGES;; esac'
==> Downloading https://ghcr.io/v2/homebrew/portable-ruby/portable-ruby/blobs/sha256:34312337c0add491f876b04e8b273a258453d6b633226130ef3105373a97c950
################################################################################################################################################################################################# 100.0%
==> Pouring portable-ruby-3.3.1.el_capitan.bottle.tar.gz
==> Auto-updating Homebrew...
Adjust how often this is run with HOMEBREW_AUTO_UPDATE_SECS or disable with
HOMEBREW_NO_AUTO_UPDATE. Hide these hints with HOMEBREW_NO_ENV_HINTS (see `man brew`).
fatal: not a valid object name: 'origin/master'
[... various warnings about stuff in my Sage worktree ...]
To restore the stashed changes to /Users/mkoeppe/s/sage/sage-rebasing/.tox/local-homebrew-macos-standard/homebrew, run:
  cd /Users/mkoeppe/s/sage/sage-rebasing/.tox/local-homebrew-macos-standard/homebrew && git stash pop