bad suggested remote url correction

[qayshp]

Checklist

• ran brew update and can still reproduce the problem?
• ran brew doctor, fixed all issues and can still reproduce the problem?
  -- not exactly, as the bug comes from doctor
• ran brew config and brew doctor and included their output with your issue?

What you were trying to do (and why)

running brew doctor to check my configuration for errors.
The git repositories had been switched from http to ssh protocol (fetch and push) by accident (automated action done by Sourcetree).

What happened (include command output)

It suggested I set my remote origin to a URL that had an extra https://github.com/ preppended to it.

Command output

$ 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: Suspicious https://github.com/Homebrew/brew git origin remote found.

The current git origin is:

ssh://git@github.com/Homebrew/brew
With a non-standard origin, Homebrew won't update properly.

You can solve this by setting the origin remote:

git -C "/usr/local/Homebrew" remote set-url origin https://github.com/https://github.com/Homebrew/brew

What you expected to happen

I would have expected either this not to be a warning in brew doctor or for a correct URL to have been provided in the warning.
For example:
git -C "/usr/local/Homebrew" remote set-url origin https://github.com/Homebrew/brew

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

1. $ git -C "/usr/local/Homebrew" remote set-url origin ssh://git@github.com/Homebrew/brew
2. $ brew doctor

Output of brew config and brew doctor commands

$ brew config
HOMEBREW_VERSION: 2.2.2-65-gbcb8f4d
ORIGIN: ssh://git@github.com/Homebrew/brew
HEAD: bcb8f4da5f48bb4ad96c1c66af0a3b5996f711d1
Last commit: 5 hours ago
Core tap ORIGIN: ssh://git@github.com/Homebrew/homebrew-core
Core tap HEAD: f9c54e5886912d9fda2ba6fb69de815c8f95bf6e
Core tap last commit: 28 minutes ago
HOMEBREW_PREFIX: /usr/local
HOMEBREW_BREW_GIT_REMOTE: https://github.com/Homebrew/brew
HOMEBREW_CORE_GIT_REMOTE: https://github.com/Homebrew/homebrew-core
HOMEBREW_DEV_CMD_RUN: 1
HOMEBREW_GITHUB_API_TOKEN: set
CPU: octa-core 64-bit kabylake
Homebrew Ruby: 2.6.3 => /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/bin/ruby
Clang: 11.0 build 1100
Git: 2.24.1 => /usr/local/bin/git
Curl: 7.64.1 => /usr/bin/curl
Java: 13.0.1
macOS: 10.15.2-x86_64
CLT: N/A
Xcode: 11.3
XQuartz: 2.7.11 => /opt/X11

Git config file for example from brew repository:

[remote "origin"]
	url = ssh://git@github.com/Homebrew/brew
	fetch = +refs/heads/*:refs/remotes/origin/*
	pushurl = ssh://git@github.com/Homebrew/brew

Relevant line of code with instructions:

brew/Library/Homebrew/diagnostic.rb

Line 133 in abfb5b1

git -C "#{repository_path}" remote set-url origin #{Formatter.url("https://github.com/#{desired_origin}")}