If there was a URL like `https://trac.chirp.danplanet.com/chirp_next/latest%60 which either contained simple text or redirected to "https://trac.chirp.danplanet.com/chirp_next/next-YYYYMMDD/chirp-next-YYYYMMD..." that would really help out, at least from what I've seen with snap, flatpak and appimage building thus far.
The link on the download page almost does this:
https://trac.chirp.danplanet.com/download?stream=next
and will redirect to the build dir. You could pull the build name out of the URL it sends you to:
$ curl -Ls -o/dev/null -w '%{url_effective}' https://trac.chirp.danplanet.com/download?stream=next https://trac.chirp.danplanet.com/chirp_next/next-20230127/
$ basename $(curl -Ls -o/dev/null -w '%{url_effective}' https://trac.chirp.danplanet.com/download?stream=next) next-20230127
--Dan