Nice one. Don't want to hack your post but I made something similar sometime ago https://github.com/kamranahmedse/git-standup

it does all of git-recall stuff (excluding diff) plus

- Multi repository usage

- Specify directory search depth

- Checking someone else's commits

- Commits from n days ago

- Changing the date format

- GPG

- Changing the Weekdays (e.g. SUN-THU)

- Fetch commits before showing standup