diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 60b4a73d..6292cd34 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -14,6 +14,7 @@ jobs:
       inputs:
         version: '1.15'
     - checkout: self
+      fetchDepth: 1
     - task: Cache@2
       displayName: Cache LLVM source
       inputs: