Downloading specific version of kopia

Is there a way to download a specific version of kopia? Currently i am installing as mentioned below.

curl -s | apt-key add -
echo "deb stable main" |  tee /etc/apt/sources.list.d/kopia.list
apt install kopia

This is not Kopia-specific, but you can do something like:

apt install kopia=0.8.3

The stable repo stores all released stable versions. The unstable repo has only a few of the latest ones, since they take up a lot of space.

Thanks for the reply.