The latest version (2026.1) of HA includes support for a new ZHA OTA firmware repository. There won’t be many, if any, firmware in it as yet.
Additionally, you can direct ZHA to use the Z2M repository by editing your configuration.yaml to include the following:
zha:
zigpy_config:
ota:
extra_providers:
- type: z2m
url: https://raw.githubusercontent.com/Koenkk/zigbee-OTA/master/index.json