Can't find linux nightly builds

A little time ago I downloaded mscore-r2673, a nightly build for Linux.

I have looked around for later Linux nightly builds but I can't find one with a name like this.

There is a prereleases.musescore.org/windows/nightly but no prereleases.musescore.org/linux/nightly and the builds in the subdirectories Fedora, debian.unstable and ubuntu have names quite different to mscore-r2673.

Googling for "r2673 site:musescore.org" doesn't yield anything either.

I would be grateful for any pointers.

(I can compile it but that is an hour or so on quite a fast machine)