diff --git a/Telegram/build/prepare/prepare.py b/Telegram/build/prepare/prepare.py
index d0fefbea5..fceedf2b5 100644
--- a/Telegram/build/prepare/prepare.py
+++ b/Telegram/build/prepare/prepare.py
@@ -1300,11 +1300,9 @@ release:
 
 if buildQt5:
     stage('qt_5_15_12', """
-    git clone https://github.com/qt/qt5.git qt_5_15_12
+    git clone -b v5.15.12-lts-lgpl https://github.com/qt/qt5.git qt_5_15_12
     cd qt_5_15_12
-    perl init-repository.pl --module-subset=qtbase,qtimageformats,qtsvg
-    git checkout v5.15.12-lts-lgpl
-    git submodule update qtbase qtimageformats qtsvg
+    perl init-repository --module-subset=qtbase,qtimageformats,qtsvg
 depends:patches/qtbase_5.15.12/*.patch
     cd qtbase
 win: