openntpd
can set the clock on startup, but it requires a non-default `-s` option [0]. In chrony it's optional and controlled by an `initstepslew` parameter [1] which also considers a threshold to determine if the clock needs a large adjustment or if it's fine to just skew it as normal.
0: https://man.openbsd.org/ntpd
1: https://chrony.tuxfamily.org/doc/3.4/chrony.conf.html