/usr/bin/git fetch --quiet --force origin step in line 936 can often fail

[fiftydinar]

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.

• your problem was from running the official install or uninstall script?
• after installation: ran brew config and brew doctor and included their output with your issue? If you couldn't install: provided your OS version with the output of your issue?

What you were trying to do (and why)

To successfully install Homebrew in Secureblue custom image based on Fedora Atomic.
https://github.com/secureblue/secureblue

What happened (include command output)

Secureblue utilizes GitHub Actions to build around 60 variants of custom OS images daily.
In all of them, Homebrew install is specified.

While most builds succeed, it can easily happen that some builds don't succeed due to Homebrew installer failure.
You can look at history of Secureblue's GitHub Actions to note this:
https://github.com/secureblue/secureblue/actions

Error command output is consistent & it shows this:

Command output

[21:13:45 g.i/s/kinoite-nvidia-open-userns-hardened:latest] => ==> Downloading and installing Homebrew...

[21:14:06 g.i/s/kinoite-nvidia-open-userns-hardened:latest] => error: RPC failed; curl 92 HTTP/2 stream 5 was not closed cleanly: CANCEL (err 8)

[21:14:06 g.i/s/kinoite-nvidia-open-userns-hardened:latest] => error: 400 bytes of body are still expected

[21:14:06 g.i/s/kinoite-nvidia-open-userns-hardened:latest] => fetch-pack: unexpected disconnect while reading sideband packet

[21:14:06 g.i/s/kinoite-nvidia-open-userns-hardened:latest] => fatal: early EOF

[21:14:06 g.i/s/kinoite-nvidia-open-userns-hardened:latest] => fatal: fetch-pack: invalid index-pack output

[21:14:06 g.i/s/kinoite-nvidia-open-userns-hardened:latest] => Failed during: /usr/bin/git fetch --quiet --force origin
  

/usr/bin/git fetch --quiet --force origin step in line 936 of the script is where this error happens.
Why it happens there?

No idea.

install/install.sh

Line 936 in 25fbaba

execute "${USABLE_GIT}" "fetch" "${quiet_progress[@]}" "--force" "origin"

What you expected to happen

For the script to proceed further & for install to be successful.

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

1. Just running the install script inside GitHub Actions to install HomeBrew to a Linux distribution/image, until you get the failure.

BlueBuild can be used to easily set this up for testing:
https://blue-build.org
https://blue-build.org/how-to/setup/#automatic-setup-using-the-bluebuild-workshop
https://blue-build.org/reference/modules/brew/

This would match our environment where this is happening.

Alternatively, you may try to run the install script many times on booted system until it fails?

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

I didn't tick the 2nd checkmark, because the failure happened during the install, not afterwards.

Possible action to take to solve this issue

Implementation of reset for the prone-to-fail function I outlined in the issue?

Maybe this can also help?
https://stackoverflow.com/questions/70303947/error-installing-homebrew-unexpected-disconnect-while-reading-sideband-packet/70310403#70310403

[MikeMcQuaid]

/usr/bin/git fetch --quiet --force origin step in line 936 of the script is where this error happens. Why it happens there?

No idea.

Because you lost your connection to GitHub. Nothing we (Homebrew) can really do about this, you'll need to ask GitHub.