From 8417729f4be71d92e73b297efc1ede68eb561e9b Mon Sep 17 00:00:00 2001
From: Gerhard Gruber <gerhard.gruber@documatrix.com>
Date: Thu, 21 Oct 2021 19:52:23 +0200
Subject: [PATCH] Update issue with UpdateFields

When calling UpdateFields on a DB, it modified the DB and the field names persisted
---
 expression_ext.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/expression_ext.go b/expression_ext.go
index 137b1b4a..a2b7da77 100644
--- a/expression_ext.go
+++ b/expression_ext.go
@@ -441,13 +441,13 @@ func (db *DB) UpdateFields(fields ...string) *DB {
 		sets[db.C(db.Value, field)] = m.FieldByName(field).Interface()
 	}
 
-	return db.Set("gorm:save_associations", false).Update(sets)
+	return db.clone().Set("gorm:save_associations", false).Update(sets)
 }
 
 func (db *DB) SelectFields(fields ...string) *DB {
 	selects := strings.Join(fields, ", ")
 
-	return db.Select(selects)
+	return db.clone().Select(selects)
 }
 
 func (e *expr) Intersect(e2 *expr) *expr {