fix: jest --watch fails with ambiguous argument

[yokomotod]

Summary

Hi. This PR fixes #10149.

Now jest --watch, jest --lastCommit, --changedSince work fine even if there are same name revision and filename.

Test plan

e2e test modified

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[yokomotod]

note: git ls-files won't fail so not require --, just unifying same style with git diff

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[yokomotod]

e2e/__tests__/jestChangedFiles.test.ts: handles a bad revision for "changedSince", for hg failed on MacOS...

but it's not about git but hg, and seems master CI failed as well 🤔

[SimenB]

Thanks @yokomotod!

[github-actions]

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