zypper allows to use the `$releasever` variable in repo URLs (see zypper(8) man
page). When mkosi uses zypper repos from the host instead of the default ones,
this variable needs to be replaced with the host's `VERSION_ID`, otherwise repo
URLs are incomplete.
"--cache-dir=/var/cache/zypp",
"--non-interactive",
"--no-refresh",
+ f"--releasever={context.config.release}",
*(["--gpg-auto-import-keys"] if context.config.repository_key_fetch else []),
*(["--no-gpg-checks"] if not context.config.repository_key_check else []),
*([f"--plus-content={repo}" for repo in context.config.repositories]),