diff --git a/aux/pull-n-build.sh b/aux/pull-n-build.sh
index a64afac..c5f014d 100755
--- a/aux/pull-n-build.sh
+++ b/aux/pull-n-build.sh
@@ -15,6 +15,15 @@ set -e -v
 		true
 	else
 		# repo URL set
+		if [ -d /repo ]; then
+			# repo already exists, try to pull
+			cd /repo && git pull --recurse-submodules
+			if [ "$?" -ne 0 ]; then
+				# pull failed, clean and retry to clone
+				echo "Pull failed, attempting to clean clone"
+				rm -rf /repo
+			fi
+		fi
 		if [ ! -d /repo ]; then
 			# repo needs to be cloned
 			# check if there is a specific branch to clone
@@ -22,9 +31,6 @@ set -e -v
 				BRANCHCMD="--branch $REPO_BRANCH"
 			fi
 			git clone --recurse-submodules $BRANCHCMD $REPO_URL /repo
-		else
-			# no - pull existing repo
-			cd /repo && git pull --recurse-submodules
 		fi
 	fi