Add latest_commits endpoint to git_commits so we can access all repos

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Finished tests in 8.855095s, 1.3552 tests/s, 3.0491 assertions/s.

12 tests, 27 assertions, 0 failures, 0 errors, 0 skips
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# Running tests:

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Finished tests in 2.540255s, 13.7781 tests/s, 33.0675 assertions/s.

35 tests, 84 assertions, 0 failures, 0 errors, 0 skips