0000000000000000000000000000000000000000000000000000000000000000 1cb2f04f390fda6c816b4b565238e0285b3644ffe430496172bf35ee1a1e6e08 committer <committer@example.com> 946771200 +0000	commit (initial): original without symlink
1cb2f04f390fda6c816b4b565238e0285b3644ffe430496172bf35ee1a1e6e08 1cb2f04f390fda6c816b4b565238e0285b3644ffe430496172bf35ee1a1e6e08 committer <committer@example.com> 946771200 +0000	checkout: moving from main to A
1cb2f04f390fda6c816b4b565238e0285b3644ffe430496172bf35ee1a1e6e08 1d056545e07325674f6ff90a129f06288b29eab8a04f47372f59982976368a6a committer <committer@example.com> 946771200 +0000	commit: new link to point to 'a'
1d056545e07325674f6ff90a129f06288b29eab8a04f47372f59982976368a6a 1cb2f04f390fda6c816b4b565238e0285b3644ffe430496172bf35ee1a1e6e08 committer <committer@example.com> 946771200 +0000	checkout: moving from A to B
1cb2f04f390fda6c816b4b565238e0285b3644ffe430496172bf35ee1a1e6e08 718ed076c73f71c301924658e80cf5fa55ef8574c451d447122d64969a5ed8e9 committer <committer@example.com> 946771200 +0000	commit: new link to point to 'b'
