func (o *ImageFetcher) PrepareFetch(url string) (binaryFetcher func() ([]byte, error), actualDigest string, err error) {
	ref, err := name.ParseReference(url)
	if err != nil {
		err = fmt.Errorf("could not parse url in image reference: %v", err)
		return
	}
	wasmLog.Infof("fetching image %s from registry %s with tag %s", ref.Context().RepositoryStr(),

	}

	go func() {
		cache.purge()
	}()
	return cache
}

func moduleNameFromURL(fullURLStr string) string {
	if strings.HasPrefix(fullURLStr, ociURLPrefix) {
		if tag, err := name.ParseReference(fullURLStr[len(ociURLPrefix):]); err == nil {
			// remove tag or sha
			return ociURLPrefix + tag.Context().Name()
		}
	}
	return fullURLStr
}