ondiskTimestamp, err := time.Parse(time.RFC3339, tagTmStr)
			if err == nil {
				dstOpts.Internal.TaggingTimestamp = ondiskTimestamp
			}
		}
		if retTmStr, ok := lkMap.Lookup(ReservedMetadataPrefixLower + ObjectLockRetentionTimestamp); ok {
			ondiskTimestamp, err := time.Parse(time.RFC3339, retTmStr)
			if err == nil {
				dstOpts.Internal.RetentionTimestamp = ondiskTimestamp