官方说明文档 ： https://www.debian.org/doc/debian-policy/index.html#contents
A、
debian/changelog应该简单就介绍安装包的版本，当然也可以包含与上一个版本的些改变。changelog应该能够使安装工具(例如：dpkg)去发现安装包的版本号和其他的release信息。
changelog文件的格式：
package (version) distribution(s); urgency=urgency [optional blank line(s), stripped] * change details more change details [blank line(s), included in output of dpkg-parsechangelog] * even more change details [optional blank line(s), stripped] -- maintainer name <email address>[two spaces] date
B、例子：
gst-plugins-base1.0 (1.14.4-2) unstable; urgency=high
* debian/patches/0001-gstrtspconnection-Security-loophole-making-heap-over.patch:
+ Add upstream patch for CVE-2019-9928 (Closes: #927978).
-- Sebastian Dröge <slomo@debian.org> Thu, 30 May 2019 11:27:53 +0300
C、详细说明：
wireshark (1.10.1) unstable; urgency=low
（空行）
(两个空格)*(空格)Self-made package
（空行）
(空格)-- Wireshark Self-made package <wireshark@example.com> (2个空格) Wed, 27 Jan 2010 00:00:00 +0000