add os.Stat() check for Reload()

reload.go

@@ -8,7 +8,18 @@ import (
 	timestamppb "google.golang.org/protobuf/types/known/timestamppb"
 )
 
-// TODO: fix and clean this up. this is a work in progress
+// does a fast check with os.Stat()
+// if the mtimes changed, does a full repo.Reload()
+func (repo *Repo) ReloadCheck() error {
+	if !repo.DidRepoChange() {
+		return nil
+	}
+	// f.configSave = true
+	err := repo.Reload()
+	return err
+}
+
+// TODO: clean this up more, but it is working now more or less
 func (repo *Repo) Reload() error {
 	// log.Info("in reload", repo.FullPath)
 	repo.Tags = new(GitTags)