origtargz unable to detect upstream new release

[Tong Sun <suntong001@users.sourceforge.net>]

Hi,

I found that origtargz unable to detect upstream new release for me.

------------------
$ origtargz
Using existing ../dbab_1.5.6.orig.tar.gz

$ origtargz -d
Using existing ../dbab_1.5.6.orig.tar.gz

rm ../dbab_1.5.6.orig.tar.gz

$ origtargz
pristine-tar: successfully generated ../dbab_1.5.6.orig.tar.gz

origtargz -h
------------------

I do have a new upstream new release, and I didn't see any other
switches that might help. In the end, I have to use

gbp import-orig --uscan

and it works just as expected. However, I'm still wondering if there
is any way to make origtargz works as well.

thx