man git-describe:
DESCRIPTION
The command finds the most recent tag that is reachable from a
commit.
[...]
By default (without --all or --tags) git describe only shows
annotated tags. For more information about creating annotated
tags see the -a and -s options to git-tag(1).
If there is no such tag, it refuses to work. Annotate your tags, or
try --always.
--
Thomas Rast
trast@{inf,student}.ethz.ch
Thanks! It is working ok.
Although it is probably not the best error handling.
I believe git should fail with some meaningful message in this case...
Thanks,
Eugene