0000000000000000000000000000000000000000 723ae325d298311a140afc87f883316e5405bf9b committer <committer@example.com> 946771200 +0000	commit (initial): original
723ae325d298311a140afc87f883316e5405bf9b 723ae325d298311a140afc87f883316e5405bf9b committer <committer@example.com> 946771200 +0000	checkout: moving from main to A
723ae325d298311a140afc87f883316e5405bf9b 075928004cd260e27002d305cb9975ff0ba0aff3 committer <committer@example.com> 946771200 +0000	commit: set link to point to 'a'
075928004cd260e27002d305cb9975ff0ba0aff3 723ae325d298311a140afc87f883316e5405bf9b committer <committer@example.com> 946771200 +0000	checkout: moving from A to B
723ae325d298311a140afc87f883316e5405bf9b 7f9b55f7f743d0ea403d39344cbfe7e67a8fdfc2 committer <committer@example.com> 946771200 +0000	commit: set link to point to 'b'
