diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 8c4094974..07bf4f247 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -44,6 +44,8 @@ debian-testing:
     - .debian@container-ifnot-exists
     - .ci-run-policy
   stage: docker-image
+  variables:
+    GIT_STRATEGY: none
 
 .common-build-and-test:
     extends: .ci-run-policy