[opus] Unknown versions in git.

[bat guano]

I'll experiment to find out what
> versions I get when building the packages. The last time I built these
> packages I didn't get unknown versions, but I got the commit number

Hi
"git ls-remote --tags" gives some information, but seems like hard work.

Maybe it would be OK to...
"keep a hard-coded fallback version string in the repo"
and...
run a modified script to obtain the commit string.

@ubuntu:~$ git clone --depth 1 git://git.xiph.org/opus-tools.git; cd opus-tools; git ls-remote --tags
Cloning into opus-tools...
remote: Counting objects: 261, done.
remote: Compressing objects: 100% (249/249), done.
remote: Total 261 (delta 162), reused 17 (delta 6)
Receiving objects: 100% (261/261), 171.86 KiB | 133 KiB/s, done.
Resolving deltas: 100% (162/162), done.