其中author是代码提交者：
git log --since="2020-03-30" --before="2020-10-15" --author="xxx" --pretty=tformat: --numstat | awk '{ add += $1; subs += $2; loc += $1 - $2 } END { printf "added lines: %s, removed lines: %s, total lines: %s\n", add, subs, loc }'