gitlab-ci: Make sure we have enough git commits for csbuild

Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
(cherry picked from commit db632015be)

.gitlab-ci.yml

@@ -153,6 +153,8 @@ fedora/undefined-sanitizer:
       - obj/
 
 fedora/csbuild:
+  variables:
+      GIT_DEPTH: "100"
   image: $CI_REGISTRY/$BUILD_IMAGES_PROJECT:$FEDORA_BUILD
   script:
   - |