Summary: Otherwise, tests that use seq.py to create files, like test-rebase-inmemory-abort-tool.t, will end up with different content, and thus commit hashes, on Windows.
Reviewed By: quark-zju
Differential Revision: D8643553
fbshipit-source-id: 8bb533765f3f6bd794aa1f7ccaf754cfbe5c3bfb
