diff --git a/routers/web/githttp.go b/routers/web/githttp.go
index 794c2944bb..a1e11a4cd7 100644
--- a/routers/web/githttp.go
+++ b/routers/web/githttp.go
@@ -13,6 +13,8 @@ func addOwnerRepoGitHTTPRouters(m *web.Router) {
 	presetGitService := func(service string) func(ctx *context.Context) {
 		return func(ctx *context.Context) { ctx.SetPathParam("preset-git-service", service) }
 	}
+	// Some users want to use "web-based git client" to access Gitea's repositories,
+	// so the CORS handler and OPTIONS method are used.
 	m.Group("/{username}/{reponame}", func() {
 		m.Methods("POST,OPTIONS", "/git-upload-pack", presetGitService("git-upload-pack"), repo.ServiceUploadPack)
 		m.Methods("POST,OPTIONS", "/git-receive-pack", presetGitService("git-receive-pack"), repo.ServiceReceivePack)
diff --git a/routers/web/repo/githttp.go b/routers/web/repo/githttp.go
index 3b7d460625..f1a01145c2 100644
--- a/routers/web/repo/githttp.go
+++ b/routers/web/repo/githttp.go
@@ -189,7 +189,7 @@ func httpBase(ctx *context.Context) *serviceHandler {
 		}
 
 		if repoExist {
-			// Because of special ref "refs/for" .. , need delay write permission check
+			// Because of special ref "refs/for" (agit) , need delay write permission check
 			if git.DefaultFeatures().SupportProcReceive {
 				accessMode = perm.AccessModeRead
 			}
@@ -350,7 +350,7 @@ func setHeaderNoCache(ctx *context.Context) {
 
 func setHeaderCacheForever(ctx *context.Context) {
 	now := time.Now().Unix()
-	expires := now + 31536000
+	expires := now + 365*86400 // 365 days
 	ctx.Resp.Header().Set("Date", strconv.FormatInt(now, 10))
 	ctx.Resp.Header().Set("Expires", strconv.FormatInt(expires, 10))
 	ctx.Resp.Header().Set("Cache-Control", "public, max-age=31536000")