Is rustfmt abandoned? Will it ever format `let ... else` syntax?

The core rustfmt project seems like it's essentially abandoned and unmaintained. There have only been six commits since January.

Tons of important configuration options are permanently stuck in an unstable state and, to my dismay, I've lost faith that any of them will ever be stabilized. Even more seriously, the very popular let ... else syntax still has no formatting support ever since its release in Rust 1.65 seven months ago which means all code inside those blocks are not touched.

Since this is an official core component of Rust depended upon by nearly every Rust user, what options does the community have to help rescue rustfmt from near-abandonment and get it maintained and developed again?