0000000000000000000000000000000000000000 4f4d303619f658d135c3e76be2280db77be14f12 committer <committer@example.com> 946771200 +0000	commit (initial): original without symlink
4f4d303619f658d135c3e76be2280db77be14f12 4f4d303619f658d135c3e76be2280db77be14f12 committer <committer@example.com> 946771200 +0000	checkout: moving from main to A
4f4d303619f658d135c3e76be2280db77be14f12 74423ffe2be2cac33b1e89c021c3d13cb33d0304 committer <committer@example.com> 946771200 +0000	commit: new link to point to 'a'
74423ffe2be2cac33b1e89c021c3d13cb33d0304 4f4d303619f658d135c3e76be2280db77be14f12 committer <committer@example.com> 946771200 +0000	checkout: moving from A to B
4f4d303619f658d135c3e76be2280db77be14f12 7bdc9f08b0403dfe7bf8f2a821cfa8ce0adc3fc9 committer <committer@example.com> 946771200 +0000	commit: new link to point to 'b'
