$ git clone -n https://src.fedoraproject.org/rpms/nats-server.git /var/lib/mock/f38-build-side-42-init-devel-637195-26384/root/chroot_tmpdir/scmroot/nats-server
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-637195-26384/root/chroot_tmpdir/scmroot/nats-server'...
$ git fetch origin 46e9b0f5be630d39cbd064ecd6d650735c96a422:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nats-server
 * [new ref]         46e9b0f5be630d39cbd064ecd6d650735c96a422 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 46e9b0f Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild