Shasum version causing failing codecov jobs

For context, our build process uses the codecov orb (CircleCI Developer Hub - codecov/codecov) to collect coverage data. This week, our jobs started failing with error

Unknown option: ignore-missing
Type shasum -h for help

as the codecov orb uses shasum. These jobs were succeeding the week prior, our circleci config is untouched, and the orb hasn’t been updated since May 27. Could there be something wrong with the shasum installed?