diff --git a/.github/workflows/mirror.yml b/.github/workflows/mirror.yml
index 7c130089954dd62b21b09195fd3e12a08c01968f..2404cd82b0a9f3abf47c6c1438c99bf42f851620 100644
--- a/.github/workflows/mirror.yml
+++ b/.github/workflows/mirror.yml
@@ -22,6 +22,12 @@ jobs:
 
     steps:
 
+      # Wait a random amount of time to avoid overloading git servers by
+      # running at precise timestamps, which quite a lot of people probably do.
+      - name: Random wait
+        run: |
+          sleep $((RANDOM % 600))
+
       # Checks out a copy of your repository on the virtual machine
       - uses: actions/checkout@v3
         with: