root@five-o:~# apt-get install --download-only 0ad-data/bullseye
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Selected version '0.0.23.1-1.1' (Debian:11.0/stable [all]) for '0ad-data'
Suggested packages:
  0ad
The following NEW packages will be installed:
  0ad-data
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 702 MB of archives.
After this operation, 2,093 MB of additional disk space will be used.
Get:1 https://mirrors.wikimedia.org/debian bullseye/main amd64 0ad-data all 0.0.23.1-1.1 [702 MB]
Fetched 621 MB in 1min 29s (7,006 kB/s)                                       
Download complete and in download only mode

$ dpkg-deb --raw-extract ./0ad-data_0.0.23.1-1.1_all.deb /tmp/0ad-data-0.0.23
$ cd /tmp/0ad-data-0.0.23/
$ ls
DEBIAN  usr
$ find
.
./DEBIAN
./DEBIAN/md5sums
./DEBIAN/control
./usr
./usr/share
./usr/share/doc
./usr/share/doc/0ad-data
./usr/share/doc/0ad-data/changelog.Debian.gz
./usr/share/doc/0ad-data/copyright
./usr/share/games
./usr/share/games/0ad
./usr/share/games/0ad/mods
./usr/share/games/0ad/mods/mod
./usr/share/games/0ad/mods/mod/mod.zip
./usr/share/games/0ad/mods/public
./usr/share/games/0ad/mods/public/public.zip
$ ls -l usr/share/games/0ad/mods/public/public.zip 
-rw-r--r-- 1 dave dave 2057825096 Jan  1  2021 usr/share/games/0ad/mods/public/public.zip                                                                     
$ ls -l /var/cache/apt/archives/0ad-data_0.0.23.1-1.1_all.deb 
-rw-r--r-- 1 root root 701833824 Jan  1  2021 /var/cache/apt/archives/0ad-data_0.0.23.1-1.1_all.deb                                                           
$ md5sum /var/cache/apt/archives/0ad-data_0.0.23.1-1.1_all.deb 
b2b6e5510898abf0eee79da48995f92f  /var/cache/apt/archives/0ad-data_0.0.23.1-1.1_all.deb
$ apt-cache show 0ad-data/bullseye | grep -i md5sum
MD5sum: b2b6e5510898abf0eee79da48995f92f