Cheesecake Filled Chocolate Bundt Cake

For the filling::

cream cheese, at room temperature

granulated sugar

large egg

vanilla extract

all-purpose flour

For the cake::

unsweetened cocoa powder, preferably Dutch-processed

bittersweet chocolate, finely chopped

espresso powder

boiling water

all-purpose flour

salt

baking soda

sour cream, at room temperature

unsalted butter, at room temperature

packed light brown sugar

vanilla

large eggs, at room temperature

For the glaze::

heavy cream

corn syrup

semisweet chocolate, chopped