repodata (repomd.xml and its referenced index files) is a mutable index that
upstream RPM repos rotate frequently. Marking it immutable (immutable_ttl: 0)
makes artifactapi cache repomd.xml forever: classifier.go checks
immutable_patterns before the RPM provider's own rule (which already classifies
repodata/ as mutable), and SetTTL with ttl=0 writes a Redis key with no expiry.
The result is a stale repomd.xml that keeps pointing at checksum-named metadata
files upstream has already deleted -> 404 on dnf metadata refresh. This broke
rpmbuilder's almalinux8 builds via the epel remote and would eventually hit any
rolling RPM remote.
Remove the repodata immutable patterns from every remote_rpm config so repodata
falls through to the provider's Mutable classification and is re-fetched every
mutable_ttl. RPMs, noarch, GPG keys and .img files stay immutable.
- Drop ".*/repodata/.*\.{xml,sqlite,yaml}.*$" from all config/remote_rpm/*.yaml
(14 files, 20 lines).
After apply, the already-cached stale repodata entries must be evicted (they
have no expiry); that is done per-remote as a follow-up.
unkinben