Hermit versioning is a mix of `version` and `channel`.

**Version**

Hermit's package version comes from the package's original Git tag.
The version is an extension to SemVer, with an extra build number to accommodate package versions from OpenJDK, which has a value `15.0.1_9`.

**Channel**

[Channel](https://cashapp.github.io/hermit/packaging/reference/#channels) could be Hermit-generated or user-defined.
Channel is considered unstable version and normally won't upgrade.
If you would like to get out of Channel, you could replace the Channel with a given version number and let Renovate manage it.