Ask for help: What's the field 'deleted' mean?

Description

In the response of the API below, what’s the meaning of the deleted field? Under what condition will its value not null?

curl https://codecov.io/api/gh/qiniu/goc/branch/master/commits\?to\=2020-12-22\&limit\=3

@fansi404, if that commit has been deleted. You could imagine that a commit has been made and pushed to GitHub. Later in time, that commit is removed (via rebase or hard reset) and pushed back up to GitHub (like this).