Doesn't look like it, but the author uses the Go SSH agent library [1] which _does_ have some example code there and looks pretty straightforward, based on what was described in the post.
It is indeed very straightforward. I did a quick check and I use this exact library for my "coarse-grained Debian diff" program, `meikkalainen` [1], and I was able to get it up and working mostly how I wanted within the same morning I started it. Very straightforward, even for a guy who doesn't spend a lot of time in the Goverse.
[1] https://pkg.go.dev/golang.org/x/crypto/ssh/agent