patch went the wrong way

discord/bot.go

@@ -168,7 +168,7 @@ func (bot *Bot) NotifyNewBeatmap(channels []string, newMaps []osuapi.Beatmapset)
 			err = fmt.Errorf("couldn't retrieve commit parent: %w", err)
 			return
 		} else {
-			patch, err = commit.Patch(parent)
+			patch, err = parent.Patch(commit)
 			if err != nil {
 				err = fmt.Errorf("couldn't retrieve patch: %w", err)
 				return

web/repo.go

@@ -74,7 +74,7 @@ func (web *Web) mapPatch(c *gin.Context) {
 	hashObj := plumbing.NewHash(hash)
 	commit, _ := repo.CommitObject(hashObj)
 	parent, _ := commit.Parent(0)
-	patch, _ := commit.Patch(parent)
+	patch, _ := parent.Patch(commit)
 
 	c.String(http.StatusOK, "text/plain", patch.String())
 }