Move fetch after cd command

scripts/generate-patch

@@ -28,9 +28,9 @@ for f in packages/*; do
 			if [[ $type == 'git' ]]; then
 				mkdir -p /tmp/tmp-charts
 				git clone --depth=1 --no-tags $url /tmp/tmp-charts
-                git fetch origin $commit
 				pwd=$(pwd)
 				cd /tmp/tmp-charts
+				git fetch origin $commit
 				git checkout $commit
 				cd $pwd
 				cp -r /tmp/tmp-charts/${subdirectory} ${f}/charts-original