stable.json get back to 2021.3.4 from time to time

Describe the issue you are experiencing

Using the version integration, I’m monitoring the last stable HA release in order to get a notification. Since the release of 2021.4.0, the last release in stable.json get back to 2021.3.4 from time to time.

What is the used version of the Supervisor?

supervisor-2021.03.9

What type of installation are you running?

Home Assistant OS

Which operating system are you running on?

Home Assistant Operating System

What is the version of your installed operating system?

5.13

What version of Home Assistant Core is installed?

core-2021.4.2

Steps to reproduce the issue

1. Go to https://version.home-assistant.io/stable.json
2. Refresh until it goes back to 2021.3.4

Anything in the Supervisor logs that might be useful for us?

21-04-10 07:26:46 INFO (MainThread) [supervisor.updater] Fetching update data from https://version.home-assistant.io/stable.json

version-home-assistant-io-har.zip

https://version.home-assistant.io/cdn-cgi/trace

fl=49f146
h=version.home-assistant.io
ip=v6
ts=1618042090.254
visit_scheme=https
uag=Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:87.0) Gecko/20100101 Firefox/87.0
colo=MRS
http=http/2
loc=FR
tls=TLSv1.3
sni=plaintext
warp=off
gateway=off

[ludeeus]

It was not promoted to the stable channel until 2021.04.3

[deftdawg]

Saw it once before you asked, but have not seen it since…

The is the last one I caught; it was from the Chicago DC (ORD from the cluster @ 172.67.68.90)

* Connected to version.home-assistant.io (172.67.68.90) port 443 (#0)
< date: Wed, 28 Apr 2021 06:36:58 GMT
< content-type: application/json
< content-length: 1627
< set-cookie: __cfduid=d64ceecf2204f8866899164873572f2441619591818; expires=Fri, 28-May-21 06:36:58 GMT; path=/; domain=.home-assistant.io; HttpOnly; SameSite=Lax; Secure
< x-amz-id-2: TvrrwBKn0HWrFNUnIHzz8uEYEWpURBSkQ/XYkO6iUZvRRhF0hCAQK6Y+iC0H7eUlCh0rP2WozKc=
< x-amz-request-id: NM9ZP2XJJ7P0TR1S
< last-modified: Tue, 13 Apr 2021 02:06:26 GMT
< etag: "f16bd259cf42ea10877a23ec613f9ff8"
< cf-cache-status: HIT
< age: 1290790
< accept-ranges: bytes
< cf-request-id: 09b8cb04c200003fbab3b8a000000001
< expect-ct: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
< report-to: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report?s=NoqVVaQ0MRVIhWmST%2BS6fFdtgrJdB7mggP6yEii2%2BivrFrtyg0%2BYv6FUGWI0ub9xEakrf6bvMP4gXQe9AcSbV%2FJZdOzgCIToe2Aohg%2BIFNQNZR7kFsGvn81k"}]}
< nel: {"report_to":"cf-nel","max_age":604800}
< server: cloudflare
< cf-ray: 646e47813c373fba-ORD
  "supervisor": "2021.03.9",

I’m guessing you republished and maybe killed the old cache, so it might be gone.

If I see it again I’ll try to capture the CF info (curl -v https://version.home-assistant.io/stable.json 2>&1 | egrep -e "Connected to|supervisor|date|cf")