Update check-submodules.sh

release/check-submodules.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 
 while read hash submodule ref; do
-  git -C $submodule fetch --depth 300 origin master
+  git -C $submodule fetch --depth 1000 origin master
   git -C $submodule branch -r --contains $hash | grep "origin/master"
   if [ "$?" -eq 0 ]; then
     echo "$submodule ok"