Comment # 1 on bug 1219793 from Andreas Stieger

$ zypper search -t package --match-exact -s bsdiff
[...]
S | Name   | Type    | Version        | Arch   | Repository
--+--------+---------+----------------+--------+----------------
  | bsdiff | package | 4.3-bp155.2.11 | x86_64 | Main Repository

$ zypper in --dry-run --download-only bsdiff
[...]
The following NEW package is going to be installed:
  bsdiff

1 new package to install.
Overall download size: 18.8 KiB. Already cached: 0 B. Download only.
Continue? [y/n/v/...? shows all options] (y): y
Retrieving: bsdiff-4.3-bp155.2.11.x86_64 (Main Repository)                     
                    (1/1),  18.8 KiB
Retrieving: bsdiff-4.3-bp155.2.11.x86_64.rpm
........................................................[done (95.1 KiB/s)]

Checking for file conflicts:
.....................................................................................[done]

$ wget
http://cdn.opensuse.org/distribution/leap/15.5/repo/oss/x86_64/bsdiff-4.3-bp155.2.11.x86_64.rpm
--2024-02-10 11:38:51-- 
http://cdn.opensuse.org/distribution/leap/15.5/repo/oss/x86_64/bsdiff-4.3-bp155.2.11.x86_64.rpm
Resolving cdn.opensuse.org (cdn.opensuse.org)... 146.75.117.91,
2a04:4e42:8d::347
Connecting to cdn.opensuse.org (cdn.opensuse.org)|146.75.117.91|:80...
connected.
HTTP request sent, awaiting response... 200 OK
Length: 19248 (19K) [application/x-download]
Saving to: 'bsdiff-4.3-bp155.2.11.x86_64.rpm'

bsdiff-4.3-bp155.2.11.x86_64.
100%[=================================================>]  18.80K  --.-KB/s   
in 0.002s

2024-02-10 11:38:51 (8.40 MB/s) - 'bsdiff-4.3-bp155.2.11.x86_64.rpm' saved
[19248/19248]


Looks like a transient issue.