Kangaroo, mushroom and dark ale pies

Name: Kangaroo, mushroom and dark ale pies
Cook time: 1 h
Total time: 1 h
Cuisine: Australian
Ingredients: 1/3 cup olive oil; 1 large onion, chopped; 200g field mushrooms, chopped; 150g button swiss brown mushrooms, sliced; 1 garlic clove, crushed; 800g diced kangaroo; 1 tbsp plain flour; sea salt and freshly ground black pepper; 330ml bottle Dark Ale; 1 cup beef stock; 1 tbsp lemon thyme leaves; 445g pack ready-made frozen sour cream shortcrust pastry, thawed; 1 egg, beaten, to glaze