Webhook firing on previous finished push event

hook.js

Summary

I added a Webhook to my project after a commit is pushed through API. The Webhook was still fired unexpectedly

Steps to reproduce

1. create a project on gitlab.com
2. push a initial commit through API
3. immediately after response is returned, add a Webhook through (API call)[https://docs.gitlab.com/ee/api/system_hooks.html#add-new-system-hook] while setting push_event to true
4. Webhook fires even though no push event happens note: if I, in script (attached), add a sleep between step 3 and step 2 that is longer than a typical hook elapsed time (around 0.1 sec), I do not observe webhook firing.

Example Project

https://gitlab.com/yuanchenlu/a-new-repo-1563542191411/-/settings/integrations

What is the current bug behavior?

webhook firing happens after a commit has been pushed

What is the expected correct behavior?

no webhook delivery

Relevant logs and/or screenshots

https://gitlab.com/yuanchenlu/a-new-repo-1563542191411/hooks/926654/hook_logs/148702889

Output of checks

This bug happens on GitLab.com

Results of GitLab environment info

current GitLab.com configuration

Results of GitLab application Check

N/A

Possible fixes

There could be a race condition happening where a webhook may fire on a push event that happened shortly before the webhook was created.