Adjtimex is a package maintained by the original authors <ssd.ucf.edu> and <jrv.com>. Redhat is including a very ancient version (1.3) when version 1.9 is availble from sunsite. The y2k bug fixed in adjtimex-1.3-7 is also in the official 1.9 version released the previous day.
Updated to adjtimex-1.9-1 in Raw Hide. Thanks for the pointer.