Comment by susam

Not exactly what's in this original post but here's a little shell function that could be useful to conveniently backdate Git commits:

  dated() {
      date=$1
      shift 1
      set -x
      GIT_AUTHOR_DATE="$date" GIT_COMMITTER_DATE="$date" "$@"
      unset date
  }

Some usage examples:

  dated "1990-01-01 10:10" git commit
  dated "1990-01-01 10:10:00 +0100" git commit
  dated "1990-01-01 10:10:10 +0100" git commit --amend
  dated "1990-01-01 10:10:10 +0100" git commit --amend --reset-author