Jest method-invocation count is wrong?

Consider code -

// utils.js
export const foo = async (a, b) => {
   // do something
   bar(a)
}

export const bar = async (a) => {
   // do something
}

// utils.spec.js
const utils = require('./utils');

const barSpy = jest.spyOn(utils, 'bar');
const result = await utils.foo('a', 'b');

expect(barSpy).toHaveBeenCalledTimes(1);

The test is failing -

Error: expect(jest.fn()).toHaveBeenCalledTimes(expected)

Expected number of calls: 1
Received number of calls: 0

I read https://medium.com/@DavideRama/mock-spy-exported-functions-within-a-single-module-in-jest-cdf2b61af642 and https://github.com/facebook/jest/issues/936 but could not solve this with multiple permutations.

Do you see any issue with this?

from Jest method-invocation count is wrong?