cheat sheets.

Common Git Log Commands
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View the hash, commit date, committer name and subject since a given time

  git log --format="%h | %cD - %cn - %s" --since=3.2.weeks.ago

  Example: 

    06f55be | Tue, 16 Aug 2011 19:53:10 -0700 - Aryk Grosz - Commit Message

View the changes on a branch since it deviated from the trunk. 

  git log --oneline $(git merge-base branch trunk)..branch

  This trick will also work with other commands like "git diff".