At Square we have some binaries that we override, so we have an internal site for those, and then we fall back to this URL for others.
pants_support_baseurls = [
'https://our-internal-machine/test-build-support',
'https://pantsbuild.github.io/binaries/build-support',
]
We have a comment to find a better solution. I’m not sure keeping binaries in github is a great long term thing because I’m not sure it could handle a lot of traffic.