$ git clone -n https://src.fedoraproject.org/rpms/golang-github-nats-io-jwt-2.git /var/lib/mock/f38-build-side-42-init-devel-1409959-31368/root/chroot_tmpdir/scmroot/golang-github-nats-io-jwt-2
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1409959-31368/root/chroot_tmpdir/scmroot/golang-github-nats-io-jwt-2'...
$ git fetch origin c6bbf0ac99ea329de6242d44b26326d2f928f1e2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-nats-io-jwt-2
 * [new ref]         c6bbf0ac99ea329de6242d44b26326d2f928f1e2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c6bbf0a update to v2.5.2, close rhbz#2239736