diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 8beac1d2f3afa78c5beecfbfc26625b1d7a2877d..60cea25d09a86be011881c20c1923ebdc71a9ac3 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,4 +1,4 @@
-# cspell:ignore codequality Micheh micheh webide updatedb stylelintrc
+# cspell:ignore codequality Micheh micheh webide updatedb stylelintrc unshallow
 
 ################
 # Drupal GitLabCI template.
@@ -466,6 +466,7 @@ default:
       else
         echo "HEAD is $(git rev-parse HEAD). \$CI_MERGE_REQUEST_DIFF_BASE_SHA is ${CI_MERGE_REQUEST_DIFF_BASE_SHA}";
       fi;
+    - git diff ${CI_MERGE_REQUEST_TARGET_BRANCH_SHA:-$CI_MERGE_REQUEST_DIFF_BASE_SHA} --name-only 2>1 > /dev/null || (echo "Warning, cannot find changed files, converting to full clone." & (git fetch --unshallow --quiet && echo "Fetch successful."))
     - git diff ${CI_MERGE_REQUEST_TARGET_BRANCH_SHA:-$CI_MERGE_REQUEST_DIFF_BASE_SHA} --name-only | sed "s_^_../_" | yarn --cwd=./core run -s spellcheck:core --no-must-find-files --file-list stdin
 
 '📔 Validatable config':