Using the latest KDE repo bits, korgac fails to start:

% korgac
korgac: symbol lookup error: /usr/lib64/libKF5AkonadiCalendar.so.5: undefined
symbol: _ZN13KCalendarCore14MemoryCalendar13doSetTimeZoneERK9QTimeZone

korgac: korganizer-19.12.0-lp151.113.2.x86_64
% rpm -qi korganizer-19.12.0-lp151.113.2.x86_64
Name        : korganizer
Version     : 19.12.0
Release     : lp151.113.2
Architecture: x86_64
Install Date: Mon 30 Dec 2019 11:14:29 AM EST
Group       : Productivity/Office/Organizers
Size        : 3938626
License     : GPL-2.0-only
Signature   : DSA/SHA1, Wed 25 Dec 2019 08:08:32 PM EST, Key ID
27c070176f88bb2f
Source RPM  : korganizer-19.12.0-lp151.113.2.src.rpm
Build Date  : Wed 25 Dec 2019 08:07:50 PM EST
Build Host  : build31
Relocations : (not relocatable)
Vendor      : obs://build.opensuse.org/KDE
URL         : https://www.kde.org
Summary     : Personal Organizer
Description :
KOrganizer is a calendar application for KDE.
Distribution: KDE:Applications / KDE_Frameworks5_openSUSE_Leap_15.1


libKF5AkonadiCalendar: libKF5AkonadiCalendar5-19.12.0-lp151.160.2.x86_64
% rpm -qi libKF5AkonadiCalendar5-19.12.0-lp151.160.2.x86_64
Name        : libKF5AkonadiCalendar5
Version     : 19.12.0
Release     : lp151.160.2
Architecture: x86_64
Install Date: Mon 30 Dec 2019 11:14:06 AM EST
Group       : Development/Libraries/KDE
Size        : 862264
License     : LGPL-2.1-or-later
Signature   : DSA/SHA1, Wed 25 Dec 2019 07:49:00 PM EST, Key ID
27c070176f88bb2f
Source RPM  : akonadi-calendar-19.12.0-lp151.160.2.src.rpm
Build Date  : Wed 25 Dec 2019 07:48:41 PM EST
Build Host  : cloud117
Relocations : (not relocatable)
Vendor      : obs://build.opensuse.org/KDE
URL         : https://www.kde.org
Summary     : KDE PIM Libraries: AkonadiCalendar
Description :
This library provides calendar integration for Akonadi based Applications.
Distribution: KDE:Applications / KDE_Frameworks5_openSUSE_Leap_15.1