debinstall #4961 publish fails when version-2 and no orig.tar.gz [rejected]

$ ldi publish myrepo
[DEBUG   ] debinstall.publish: value for destination: /home/logilab/repositories
[DEBUG   ] debinstall.publish: value for configurations: /var/lib/debinstall
[DEBUG   ] debinstall.publish: value for distribution: sid
[DEBUG   ] debinstall.publish: value for destination: /home/logilab/repositories
[DEBUG   ] debinstall.publish: value for check_signature: yes
[DEBUG   ] debinstall.publish: value for checkers: lintian linda
[CRITICAL] debinstall.publish: The following packaging errors were found:
dpkg-source: failure: cannot read ./toto_2.47.5.orig.tar.gz: No such file or directory

internal error: error occured during execution of dpkg-source in /tmp/o9gapoykby/source/toto:

internal error: could not unpack package to desired level: Aucun fichier ou répertoire de ce type
$ ls myrepo/incoming
toto_2.47.5-2_all.deb  toto_2.47.5-2_amd64.changes toto_2.47.5-2.diff.gz  toto_2.47.5-2.dsc
prioritynormal
typebug
done in2.2.0
load0.000
load left0.000
closed by<not specified>