diff --git a/.github/workflows/msys2.yml b/.github/workflows/msys2.yml
index 42ce9e2..7eb7f6b 100644
--- a/.github/workflows/msys2.yml
+++ b/.github/workflows/msys2.yml
@@ -1,5 +1,8 @@
 name: MSYS2
-on: [push, pull_request]
+on:
+  pull_request:
+    branches:
+      - master
 
 jobs:
   msys2-mingw:
--
libgit2 0.21.2