diff --git a/unpack-trees.c b/unpack-trees.c
index 50189909b86d6a..db2f285601d8aa 100644
--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -1437,7 +1437,9 @@ static void mark_new_skip_worktree(struct exclude_list *el,
 	 * 2. Widen worktree according to sparse-checkout file.
 	 * Matched entries will have skip_wt_flag cleared (i.e. "in")
 	 */
+	enable_fscache(istate->cache_nr);
 	clear_ce_flags(istate, select_flag, skip_wt_flag, el);
+	disable_fscache();
 }
 
 static int verify_absent(const struct cache_entry *,