diff --git a/internal/pkg/testutils/mockvariable.go b/internal/pkg/testutils/mockvariable.go
new file mode 100644
index 00000000..3307b89e
--- /dev/null
+++ b/internal/pkg/testutils/mockvariable.go
@@ -0,0 +1,10 @@
+// Copyright 2025 The Forgejo Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package testutils
+
+func MockVariable[T any](p *T, v T) (reset func()) {
+	old := *p
+	*p = v
+	return func() { *p = old }
+}