db update requires own download logic for prefetch, previous logic caused check for updates to use old database and all databases were being updated before all repos were checked for cached pkgs

internal/repomaint/repomaint.go

@@ -16,7 +16,7 @@ const (
 )
 
 type CacheClient interface {
-	FetchDB() error
+	FetchDB(repo string) error
 	Fetch(relpath string) (*cache.CacheFile, error)
 }
 
@@ -53,7 +53,7 @@ func (r *RepoSync) Sync() error {
 
 		// call cache db fetch
 		slog.Info("refreshing databases")
-		if err := r.c.FetchDB(); err != nil {
+		if err := r.c.FetchDB(repo); err != nil {
 			return err
 		}