diff --git a/kustomization/base/tekton/trigger/imagebuild-binding.yaml b/kustomization/base/tekton/trigger/imagebuild-binding.yaml
index 661227a..9f22434 100644
--- a/kustomization/base/tekton/trigger/imagebuild-binding.yaml
+++ b/kustomization/base/tekton/trigger/imagebuild-binding.yaml
@@ -7,7 +7,7 @@ spec:
   - name: url
     value: $(body.repository.clone_url)
   - name: revision
-    value: $(body.pull_request.head.ref)
+    value: $(body.pull_request.base.ref)
   - name: image
     value: $(body.repository.full_name)
   - name: tag
diff --git a/kustomization/base/tekton/trigger/msebuild-binding.yaml b/kustomization/base/tekton/trigger/msebuild-binding.yaml
index 698a125..7b66f48 100644
--- a/kustomization/base/tekton/trigger/msebuild-binding.yaml
+++ b/kustomization/base/tekton/trigger/msebuild-binding.yaml
@@ -7,7 +7,7 @@ spec:
   - name: url
     value: $(body.repository.clone_url)
   - name: revision
-    value: $(body.pull_request.head.ref)
+    value: $(body.pull_request.base.ref)
   - name: image
     value: $(body.repository.full_name)
   - name: apiurl