I'm putting together a Flatpak distribution channel. Flatpaks are cross-distribution, containerized, desktop packages for Linux. I'm much of the way toward having this automated via GitLab CI, but I still have to change the URL *and* the SHA256 checksum between daily builds. What would be better is if the URL remained constant and I only trigger a build if the checksum changes, because calculating that is easy. Harder would be scraping the site to determine the latest daily build, constructing the download URL *and* updating the checksum. :)
You could pull this reliably, and when the checksum of the .tar.gz changes, pull the real file (which you have the filename for in the manifest):
https://trac.chirp.danplanet.com/chirp_daily/LATEST/SHA1SUM
That would mean you're polling a single URL, and pulling down a tiny file instead of the whole tarball periodically just to see if it has changed.
--Dan