Intenté ejecutar brew updatey recibo un error sobre mis cambios locales que se perderían si me fusionara. Traté de comprometer mis cambios locales (no recuerdo haber hecho ninguno, pero ha pasado un tiempo), y eso empeoró las cosas.
Aquí está la salida:
MBP:Library User$ sudo brew update
error: The following untracked working tree files would be overwritten by merge:
Library/Aliases/fastcgi
Library/Aliases/htop
Library/Aliases/nodejs
Library/Aliases/ocio
Library/Aliases/oiio
Library/Aliases/pgrep
Library/Aliases/pkill
Library/Contributions/cmds/brew-beer.rb
Library/Contributions/cmds/brew-dirty.rb
Library/Contributions/cmds/brew-graph
Library/Contributions/cmds/brew-grep
Library/Contributions/cmds/brew-leaves.rb
Library/Contributions/cmds/brew-linkapps.rb
Library/Contributions/cmds/brew-man
Library/Contributions/cmds/brew-mirror-check.rb
Library/Contributions/cmds/brew-missing.rb
Library/Contributions/cmds/brew-pull.rb
Library/Contributions/cmds/brew-readall.rb
Library/Contributions/cmds/brew-server
Library/Contributions/cmds/brew-services.rb
Library/Contributions/cmds/brew-switch.rb
Library/Contributions/cmds/brew-test-bot.commit.html.erb
Library/Contributions/cmds/brew-test-bot.css
Library/Contributions/cmds/brew-test-bot.index.html.erb
Library/Contributions/cmds/brew-test-bot.rb
Library/Contributions/cmds/brew-tests.rb
Library/Contributions/cmds/brew-unpack.rb
Library/Contributions/cmds/brew-which.rb
Library/Contributions/install_homebrew.rb
Library/Formula/abcl.rb
Library/Formula/abyss.rb
Library/Formula/akka.rb
Library/Formula/apollo.rb
Library/Formula/appledoc.rb
Library/Formula/arangodb.rb
Library/Formula/autoconf.rb
Library/Formula/automake.rb
Library/Formula/avidemux.rb
Library/Formula/bind.rb
Library/Formula/bsdconv.rb
Library/Formula/bsdmake.rb
Library/Formula/camellia.rb
Library/Formula/cbmbasic.rb
Library/Formula/cdo.rb
Library/Formula/checkstyle.rb
Library/Formula/cifer.rb
Library/Formula/clhep.rb
Library/Formula/collada-dom.rb
Library/Formula/crash.rb
Library/Formula/crossroads.rb
Library/Formula/css-crush.rb
Library/Formula/curlftpfs.rb
Library/Formula/dart.rb
Library/Formula/dasm.rb
Library/Formula/dfc.rb
Library/Formula/di.rb
Library/Formula/dsniff.rb
Library/Formula/dupx.rb
Library/Formula/dwatch.rb
Library/Formula/eprover.rb
Library/Formula/ext2fuse.rb
Library/Formula/ezlupdate.rb
Library/Formula/f3.rb
Library/Formula/fastx_toolkit.rb
Library/Formula/fceux.rb
Library/Formula/findbugs.rb
Library/Formula/freerdp.rb
Library/Formula/funcoeszz.rb
Library/Formula/fwknop.rb
Library/Formula/gabedit.rb
Library/Formula/gbdfed.rb
Library/Formula/gconf.rb
Library/Formula/git-encrypt.rb
Library/Formula/glm.rb
Library/Formula/gmap-gsnap.rb
Library/Formula/gnu-arch.rb
Library/Formula/gnunet.rb
Library/Formula/gobby.rb
Library/Formula/gptfdisk.rb
Library/Formula/griffon.rb
Library/Formula/grok.rb
Library/Formula/gtk-chtheme.rb
Library/Formula/gtkglextmm.rb
Library/Formula/gtmess.rb
Library/Formula/hg-flow.rb
Library/Formula/hqx.rb
Library/Formula/htop-osx.rb
Library/Formula/htpdate.rb
Library/Formula/imap-uw.rb
Library/Formula/iozone.rb
Library/Formula/ipbt.rb
Library/Formula/ipe.rb
Library/Formula/ispc.rb
Library/Formula/ispell.rb
Library/Formula/jigdo.rb
Library/Formula/jing.rb
Library/Formula/jless.rb
Library/Formula/jpeginfo.rb
Library/Formula/konoha.rb
Library/Formula/legit.rb
Library/Formula/libcouchbase.rb
Library/Formula/libcuefile.rb
Library/Formula/libextractor.rb
Library/Formula/libglademm.rb
Library/Formula/libgtextutils.rb
Library/Formula/libinfinity.rb
Library/Formula/libkate.rb
Library/Formula/libqalculate.rb
Library/Formula/libqglviewer.rb
Library/Formula/libreplaygain.rb
Library/Formula/libtool.rb
Library/Formula/libvbucket.rb
Library/Formula/libvo-aacenc.rb
Library/Formula/libxmi.rb
Library/Formula/lifelines.rb
Library/Formula/makeicns.rb
Library/Formula/mathgl.rb
Library/Formula/meld.rb
Library/Formula/mesalib-glw.rb
Library/Formula/minisat.rb
Library/Formula/minuit2.rb
Library/Formula/mobile-shell.rb
Library/Formula/movgrab.rb
Library/Formula/mp3cat.rb
Library/Formula/mpich2.rb
Library/Formula/mrfast.rb
Library/Formula/musepack.rb
Library/Formula/ndiff.rb
Library/Formula/net6.rb
Library/Formula/nrpe.rb
Library/Formula/nuttcp.rb
Library/Formula/oath-toolkit.
Updating aa07533..3f070ef
Aborting
Error: Failed while executing git pull origin refs/heads/master:refs/remotes/origin/master
git fetch originantes de que el reinicio funcionara. Gracias. Es curioso cómo se agregó esta respuesta el día anterior, ¡qué suerte!