Guillem is right. I was trying to construct `changelog` entry manually and couldn't get it right using the doc.
- Bug#976301: Fix invalid `changelog` format exam... Anatoli Babenia
- Processed: Fix invalid `changelog` format ... Debian Bug Tracking System
- Bug#976301: Fix invalid `changelog` format... Sean Whitton
- Bug#976301: Fix invalid `changelog` fo... Guillem Jover
- Bug#976301: Fix invalid `changelog... Anatoli Babenia
- Bug#976301: Fix invalid `changelog... Sean Whitton
- Bug#976301: Fix invalid `chang... Anatoli Babenia
- Processed: Re: Bug#976301: Fix invalid `ch... Debian Bug Tracking System
- Bug#976301: marked as done (Fix invalid `c... Debian Bug Tracking System
- Bug#976301: closed by Debian FTP Masters &... Anatoli Babenia
- Bug#976301: closed by Debian FTP Maste... Sean Whitton