The Git Commands I Run Before Reading Any Code:

What Changes the Most

git log --format=format: --name-only --since="1 year ago" | sort | uniq -c | sort -nr | head -20

Who Built This

git shortlog -sn --no-merges

In a 6 months window:

git shortlog -sn --no-merges --since="6 months ago"

Where Do Bugs Cluster

git log -i -E --grep="fix|bug|broken" --name-only --format='' | sort | uniq -c | sort -nr | head -20

Is This Project Accelerating or Dying

git log --format='%ad' --date=format:'%Y-%m' | sort | uniq -c

How Often Is the Team Firefighting

git log --oneline --since="1 year ago" | grep -iE 'revert|hotfix|emergency|rollback'