$ git clone -n https://src.fedoraproject.org/rpms/nats-server.git /var/lib/mock/f39-build-1710033-41224/root/chroot_tmpdir/scmroot/nats-server
Cloning into '/var/lib/mock/f39-build-1710033-41224/root/chroot_tmpdir/scmroot/nats-server'...
$ git fetch origin 500f68c5ad729f6f29441b7179070c115eed537f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nats-server
 * [new ref]         500f68c5ad729f6f29441b7179070c115eed537f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 500f68c update to v2.10.3, close rhbz#2244204