zlib: add_urls from deb-src (#2273)

Co-authored-by: 沈浪熊猫儿 <shenda@ustc.edu>

packages/z/zlib/xmake.lua

@@ -3,8 +3,11 @@ package("zlib")
     set_homepage("http://www.zlib.net")
     set_description("A Massively Spiffy Yet Delicately Unobtrusive Compression Library")
 
-    add_urls("https://github.com/madler/zlib/archive/$(version).tar.gz",
-             "https://github.com/madler/zlib.git")
+    add_urls("https://github.com/madler/zlib/archive/$(version).tar.gz")
+    add_urls("https://mirrors.ustc.edu.cn/debian/pool/main/z/zlib/zlib_$(version).dfsg.orig.tar.gz", {
+        version = function (version) return version:sub(2) end
+    })
+    add_urls("https://github.com/madler/zlib.git")
     add_versions("v1.2.10", "42cd7b2bdaf1c4570e0877e61f2fdc0bce8019492431d054d3d86925e5058dc5")
     add_versions("v1.2.11", "629380c90a77b964d896ed37163f5c3a34f6e6d897311f1df2a7016355c45eff")
     add_versions("v1.2.12", "d8688496ea40fb61787500e863cc63c9afcbc524468cedeb478068924eb54932")