07/12/2019 01:47:53 - INFO:New upstream version detected (4.7.6+dfsg~ubuntu) which is after the last published upstream version (4.10.0+dfsg).
IOW, the root problem here was that git-ubuntu thought version 4.7.6 > 4.7.10. Frank's repro shows a similar error thinking that 3.9.0+dfsg > 3.15.1+dfsg.
Both of these are instances of the same problem reported in #1868631 which Robie fixed in revision d13680cf5787e4cf6939c60ce71fd089a4c66d0a.
Fwiw, the original bug report shows:
07/12/2019 01:47:53 - INFO:New upstream version detected (4.7.6+dfsg~ubuntu) which is after the last published upstream version (4.10.0+dfsg).
IOW, the root problem here was that git-ubuntu thought version 4.7.6 > 4.7.10. Frank's repro shows a similar error thinking that 3.9.0+dfsg > 3.15.1+dfsg.
Both of these are instances of the same problem reported in #1868631 which Robie fixed in revision d13680cf5787e4c f6939c60ce71fd0 89a4c66d0a.
So I think this bug can be closed.