Rspec reloads removes the value that updated earlier

why reload removes the values that has been updated on before(:each)

is there any other approach for doing such things

thanks in advance i have written my rspec as below

let!(:book){FactoryGirl.create(:book)
let!(:book2){FactoryGirl.create(:book)

before(:each) do
  book.update_column(name:"my new book")
  book2.update_column(name:"my second book")
end

it "does updation of name" do
  data = book.rename_book
  expect(book.reload.name).to eq("some new name")
  expect(book2.reload.name).to not_eq("some new name") // here it removes the book name and make it as nil, how to prevent this
end

//the book2.reload is removes the book name and update it as nil, as how to fix it as it should display the second book name, instead it displays nil for that book.