admin_epoch
, one should use:
# cibadmin --modify --xml-text '<cib admin_epoch="42"/>'
Example 4.1. XML attributes set for a cib element
<cib crm_feature_set="3.0.7" validate-with="pacemaker-1.2" admin_epoch="42" epoch="116" num_updates="1" cib-last-written="Mon Jan 12 15:46:39 2015" update-origin="rhel7-1" update-client="crm_attribute" have-quorum="1" dc-uuid="1">