$ git clone -n https://src.fedoraproject.org/rpms/php-zmq.git /var/lib/mock/f42-build-862783-171084/root/chroot_tmpdir/scmroot/php-zmq
Cloning into '/var/lib/mock/f42-build-862783-171084/root/chroot_tmpdir/scmroot/php-zmq'...
$ git fetch origin b834d4e33c6cc755cad9dc3311741043d2dd8b67:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-zmq
 * [new ref]         b834d4e33c6cc755cad9dc3311741043d2dd8b67 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b834d4e rebuild for https://fedoraproject.org/wiki/Changes/php84