From 274bc00ca2c3bf5a734d74e47cc28fa8c41e3875 Mon Sep 17 00:00:00 2001
From: yp05327 <576951401@qq.com>
Date: Tue, 26 Mar 2024 19:20:26 +0900
Subject: [PATCH] Fix duplicate migrated milestones (#30102)

Fix #17567
---
 services/migrations/migrate.go | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/services/migrations/migrate.go b/services/migrations/migrate.go
index 0b83f3b4a3..5bb3056161 100644
--- a/services/migrations/migrate.go
+++ b/services/migrations/migrate.go
@@ -250,14 +250,13 @@ func migrateRepository(ctx context.Context, doer *user_model.User, downloader ba
 			}
 			log.Warn("migrating milestones is not supported, ignored")
 		}
-
 		msBatchSize := uploader.MaxBatchInsertSize("milestone")
 		for len(milestones) > 0 {
 			if len(milestones) < msBatchSize {
 				msBatchSize = len(milestones)
 			}
 
-			if err := uploader.CreateMilestones(milestones...); err != nil {
+			if err := uploader.CreateMilestones(milestones[:msBatchSize]...); err != nil {
 				return err
 			}
 			milestones = milestones[msBatchSize:]