andrei@tumbleweed:~> rpm -q zypper
zypper-1.14.73-1.2.x86_64
andrei@tumbleweed:~> zypper se no-such-package
Loading repository data...
Reading installed packages...
No matching items found.
andrei@tumbleweed:~> grep cpe /var/cache/zypp/raw/repo-oss/repodata/repomd.xml
    <distro cpeid="cpe:/o:opensuse:opensuse:20240520">openSUSE
Tumbleweed</distro>
andrei@tumbleweed:~> cat /etc/zypp/repos.d/repo-oss.repo
[repo-oss]
name=openSUSE-Tumbleweed-Oss
enabled=1
autorefresh=1
baseurl=http://download.opensuse.org/tumbleweed/repo/oss/
andrei@tumbleweed:~>


Well, as of now the available snapshot is 20240524 so I most certainly expect 

Repository 'openSUSE-Tumbleweed-OSS' is out-of-date. You can run 'zypper
refresh' as root to update it.
...