$ git clone -n https://src.fedoraproject.org/rpms/anaconda-webui.git /var/lib/mock/f42-build-side-1-3501279-45974/root/chroot_tmpdir/scmroot/anaconda-webui
Cloning into '/var/lib/mock/f42-build-side-1-3501279-45974/root/chroot_tmpdir/scmroot/anaconda-webui'...
$ git fetch origin e3f0c9758b8f166b087a2f009d85d56370ed3daa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/anaconda-webui
 * [new ref]         e3f0c9758b8f166b087a2f009d85d56370ed3daa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e3f0c97 Update to 33 upstream release