From 69f7c64e6828c5f33bca37bb0aac1a7a2336298c Mon Sep 17 00:00:00 2001
From: Filip Gralinski <filipg@amu.edu.pl>
Date: Sat, 9 Oct 2021 14:40:14 +0200
Subject: [PATCH] Better message when submitting fails

---
 src/GEval/Submit.hs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/GEval/Submit.hs b/src/GEval/Submit.hs
index f04a6b6..faf14e1 100644
--- a/src/GEval/Submit.hs
+++ b/src/GEval/Submit.hs
@@ -112,7 +112,7 @@ checkRemoteSynced = do
         return ()
       else
         failWith "Changes are not merged with remote branch."
-    Nothing -> failWith "No tracking branch found, use `git push -u origin BRANCH_NAME`"
+    Nothing -> failWith "No tracking branch found, use `git push -u origin BRANCH_NAME`.\nIf the repo was cloned with ``--single-branch` you might also need to do\n`git config remote.origin.fetch \"+refs/heads/*:refs/remotes/origin/*\"` first. "
 
 getCurrentBranch :: IO String
 getCurrentBranch = runCommand "git rev-parse --abbrev-ref HEAD"