[Python] How to read [project.urls] metadata inside a project's entry point?

Using pyproject.toml I wanted to read its [project.urls] from inside a script launched by one of the package's entry points. So using the full example pyproject.toml (altering the [build-system] to setuptools and wheel) how could (or should) I get https://example.com from the [project.urls]'s Homepage name programmatically inside a function of the spam:main_cli entry point?

[build-system]
requires = ["setuptools", "wheel"]
build-backend = "setuptools.build_meta"

[project]
name = "spam-eggs"
version = "2020.0.0"
dependencies = [
"httpx",
"gidgethub[httpx]>4.0.0",
"django>2.1; os_name != 'nt'",
"django>2.0; os_name == 'nt'",
]
requires-python = ">=3.8"
authors = [
{name = "Pradyun Gedam", email = "pradyun@example.com"},
{name = "Tzu-Ping Chung", email = "tzu-ping@example.com"},
{name = "Another person"},
{email = "different.person@example.com"},
]
maintainers = [
{name = "Brett Cannon", email = "brett@example.com"}
]
description = "Lovely Spam! Wonderful Spam!"
readme = "README.rst"
license = "MIT"
license-files = ["LICEN[CS]E.*"]
keywords = ["egg", "bacon", "sausage", "tomatoes", "Lobster Thermidor"]
classifiers = [
"Development Status :: 4 - Beta",
"Programming Language :: Python"
]

[project.optional-dependencies]
gui = ["PyQt5"]
cli = [
"rich",
"click",
]

[project.urls]
Homepage = "https://example.com"
Documentation = "https://readthedocs.org"
Repository = "https://github.com/me/spam.git"
"Bug Tracker" = "https://github.com/me/spam/issues"
Changelog = "https://github.com/me/spam/blob/master/CHANGELOG.md"

[project.scripts]
spam-cli = "spam:main_cli"

[project.gui-scripts]
spam-gui = "spam:main_gui"

[project.entry-points."spam.magical"]
tomatoes = "spam:main_tomatoes"

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