diff --git a/convert.c b/convert.c
index d8737fe0f2..61a540e212 100644
--- a/convert.c
+++ b/convert.c
@@ -960,7 +960,7 @@ int async_query_available_blobs(const char *cmd, struct string_list *available_p
 	while ((line = packet_read_line(process->out, NULL))) {
 		const char *path;
 		if (skip_prefix(line, "pathname=", &path))
-			string_list_insert(available_paths, xstrdup(path));
+			string_list_insert(available_paths, path);
 		else
 			; /* ignore unknown keys */
 	}
diff --git a/entry.c b/entry.c
index e7ed440ce2..3143b9996b 100644
--- a/entry.c
+++ b/entry.c
@@ -191,7 +191,7 @@ int finish_delayed_checkout(struct checkout *state, int show_progress)
 		progress = start_delayed_progress(_("Filtering content"), dco->paths.nr);
 	while (dco->filters.nr > 0) {
 		for_each_string_list_item(filter, &dco->filters) {
-			struct string_list available_paths = STRING_LIST_INIT_NODUP;
+			struct string_list available_paths = STRING_LIST_INIT_DUP;
 
 			if (!async_query_available_blobs(filter->string, &available_paths)) {
 				/* Filter reported an error */
@@ -245,6 +245,8 @@ int finish_delayed_checkout(struct checkout *state, int show_progress)
 				} else
 					errs = 1;
 			}
+
+			string_list_clear(&available_paths, 0);
 		}
 
 		filter_string_list(&dco->filters, 0, string_is_not_null, NULL);
diff --git a/t/t2080-parallel-checkout-basics.sh b/t/t2080-parallel-checkout-basics.sh
index 5ffe1a41e2..59e5570cb2 100755
--- a/t/t2080-parallel-checkout-basics.sh
+++ b/t/t2080-parallel-checkout-basics.sh
@@ -8,6 +8,7 @@ working tree.
 '
 
 TEST_NO_CREATE_REPO=1
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 . "$TEST_DIRECTORY/lib-parallel-checkout.sh"
 
diff --git a/t/t2082-parallel-checkout-attributes.sh b/t/t2082-parallel-checkout-attributes.sh
index f3511cd43a..aec55496eb 100755
--- a/t/t2082-parallel-checkout-attributes.sh
+++ b/t/t2082-parallel-checkout-attributes.sh
@@ -10,6 +10,7 @@ properly (without access to the index or attribute stack).
 '
 
 TEST_NO_CREATE_REPO=1
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 . "$TEST_DIRECTORY/lib-parallel-checkout.sh"
 . "$TEST_DIRECTORY/lib-encoding.sh"