$ git summary

    $ git log-of-count-and-email

    $ git log-of-week-and-count

Constructive feedback welcome.

Example:

    $ git clone https://github.com/git/git
    $ cd git

    $ git summary
    Summary of this branch...
    2005-04-07T15:13:13-07:00 first commit timestamp
    2019-06-21T11:26:11-07:00 latest commit timestamp
    55932 commit count
    4923 date count
    1744 author count
    68 committer count
    718 tag count
    1 local branch count
    5 remote branch count

    $ git log-of-count-and-email | head -3
    16417 29% [email protected]
    4167 7% [email protected]
    3193 5% [email protected]

    $ git log-of-week-and-count | head -3
    2019#25 31 0%
    2019#24 19 0%
    2019#23 22 0%