[RickHull]

Thanks for this. My updated relevant portion of ~/.gitconfig:

    [alias]
        st = status
        ci = commit
        co = checkout
        br = branch
        df = diff
        dfs = diff --stat
        dfc = diff --cached
        dfh = diff --histogram
        dfn = diff --name-status
        rs = restore
        rsc = restore --staged
        last = log -1 HEAD
        lg = log --graph --decorate --oneline --abbrev-commit
        cm = commit -m
        ca = commit --amend
        cane = commit --amend --no-edit
        who = shortlog -sn --no-merges HEAD
        dmg = log --oneline -i -E --grep='(incident|outage|downtime|rollback|revert|mitigate|mitigation|hotfix|broke|prod)' --since='1 year ago'
        bugs = log --oneline -i -E --grep='(bug|bugfix|fix|fixed|fixes|defect|regression|hotfix|broke)' --since='1 year ago'
        bugfiles = !git log --name-only --format='' -i -E --grep='(bug|bugfix|fix|fixed|fixes|defect|regression|hotfix|broke)' --since='1 year ago' | sort | uniq -c | sort -nr
        monthly = !git log --since='1 year ago' --format='%ad' --date=format:'%Y-%m' | sort | uniq -c
        churn = !git log --format='' --name-only --diff-filter=AM --since='1 year ago' | sort | uniq -c | sort -nr | head -20