diff --git a/test/labels-reconcile.test.sh b/test/labels-reconcile.test.sh
index c90793f..9dd71c3 100755
--- a/test/labels-reconcile.test.sh
+++ b/test/labels-reconcile.test.sh
@@ -181,6 +181,7 @@ expect "a bare head over an unreadable base still warns" yes \
 # using the former manufactures a downgrade after an intervening release.
 release_shape_ref_probe() { # $1 = phantom | bump
   (
+    # shellcheck disable=SC2030 # this probe intentionally isolates its repository fixture
     REPO=owner/repo
     LABELS_CONF="$FIXTURE_CONF"
     CEREMONY_FORGE=github