Merge pull request git-for-windows#1426 from atetubou/fetch_pack

fetch-pack.c: enable fscache for stats under .git/objects

Author: dscho

fetch-pack.c

@@ -759,6 +759,7 @@ static void mark_complete_and_common_ref(struct fetch_negotiator *negotiator,
 	save_commit_buffer = 0;
 
 	trace2_region_enter("fetch-pack", "parse_remote_refs_and_find_cutoff", NULL);
+	enable_fscache(1);
 	for (ref = *refs; ref; ref = ref->next) {
 		struct commit *commit;
 
@@ -785,6 +786,7 @@ static void mark_complete_and_common_ref(struct fetch_negotiator *negotiator,
 		if (!cutoff || cutoff < commit->date)
 			cutoff = commit->date;
 	}
+	enable_fscache(0);
 	trace2_region_leave("fetch-pack", "parse_remote_refs_and_find_cutoff", NULL);
 
 	/*