$ git clone -n https://src.fedoraproject.org/rpms/cantera.git /var/lib/mock/f42-build-864641-172514/root/chroot_tmpdir/scmroot/cantera
Cloning into '/var/lib/mock/f42-build-864641-172514/root/chroot_tmpdir/scmroot/cantera'...
$ git fetch origin 36194535705285de1f93cd66daee03f2dfb10351:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cantera
 * [new ref]         36194535705285de1f93cd66daee03f2dfb10351 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3619453 update to v3.1.0 (close rhbz#2332627) - includes new example data and new lxcat2yaml mechanism converter