Defaulting fetch to origin when set in the repo-config

Signed-off-by: Santi Béjar <sbejar@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
diff --git a/git-fetch.sh b/git-fetch.sh
index b6a223e..f7167ab 100755
--- a/git-fetch.sh
+++ b/git-fetch.sh
@@ -70,7 +70,8 @@
 0)
 	test -f "$GIT_DIR/branches/origin" ||
 		test -f "$GIT_DIR/remotes/origin" ||
-			die "Where do you want to fetch from today?"
+			git-repo-config --get remote.origin.url >/dev/null ||
+				die "Where do you want to fetch from today?"
 	set origin ;;
 esac