negative-refspec: improve comment on query_matches_negative_refspec

Comment did not adequately explain how the two loops work
together to achieve the goal of querying for matching of any
negative refspec.

Signed-off-by: Nipunn Koorapati <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: nipunn1313

remote.c

@@ -740,6 +740,12 @@ static int query_matches_negative_refspec(struct refspec *rs, struct refspec_ite
 	 * item uses the destination. To handle this, we apply pattern
 	 * refspecs in reverse to figure out if the query source matches any
 	 * of the negative refspecs.
+	 *
+	 * The first loop finds and expands all positive refspecs
+	 * matched by the queried ref.
+	 *
+	 * The second loop checks if any of the results of the first loop
+	 * match any negative refspec.
 	 */
 	for (i = 0; i < rs->nr; i++) {
 		struct refspec_item *refspec = &rs->items[i];