3 files changed, 14 insertions, 4 deletions

diff --git a/cgit.h b/cgit.h
index ea90833..c99d337 100644
--- a/cgit.h
+++ b/cgit.h
@@ -62,4 +62,5 @@ struct cgit_repo {
         int enable_log_filecount;
         int enable_log_linecount;
+        time_t mtime;
 };
 
diff --git a/shared.c b/shared.c
index f5875e4..89d1bab 100644
--- a/shared.c
+++ b/shared.c
@@ -61,4 +61,5 @@ struct cgit_repo *cgit_add_repo(const char *url)
         ret->module_link = ctx.cfg.module_link;
         ret->readme = NULL;
+        ret->mtime = -1;
         return ret;
 }
diff --git a/ui-repolist.c b/ui-repolist.c
index cf27cb3..aa743bf 100644
--- a/ui-repolist.c
+++ b/ui-repolist.c
@@ -33,17 +33,25 @@ static int get_repo_modtime(const struct cgit_repo *repo, time_t *mtime)
         char *path;
         struct stat s;
+        struct cgit_repo *r = (struct cgit_repo *)repo;
 
+        if (repo->mtime != -1) {
+                *mtime = repo->mtime;
+                return 1;
+        }
         path = fmt("%s/%s", repo->path, ctx.cfg.agefile);
         if (stat(path, &s) == 0) {
                 *mtime = read_agefile(path);
+                r->mtime = *mtime;
                 return 1;
         }
 
         path = fmt("%s/refs/heads/%s", repo->path, repo->defbranch);
-        if (stat(path, &s) == 0) {
+        if (stat(path, &s) == 0)
                 *mtime = s.st_mtime;
-                return 1;
-        }
-        return 0;
+        else
+                *mtime = 0;
+
+        r->mtime = *mtime;
+        return (r->mtime != 0);
 }