createrepo, --update and the sqlite database

Hi!

Someone might have read the discussion I had with Mike Bonnet (RH) on
the fedora-devel-list, about adding -d (sqlite database creation) to the
createrepo opts used in koji.

Well. He pointed out, that createrepo also uses --update in koji and I
found out, that --update and -d don't work together; Means that the xml
creation goes faster due to --update, but the sqlite database seems to
be completely recreated each time - and that - of course - takes some time.

Is there someone who can take a look at that and add the appropriate
code to use --update in sqlite creation as well?

Thanks a lot,
 Oliver