Changelog for which-2.21-20.fc33.x86_64.rpm :

* Wed Jul 29 2020 Fedora Release Engineering - 2.21-20- Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild
* Wed Mar 25 2020 Than Ngo - 2.21-19- fixed #1817138 - Invalid syntax in /etc/profile.d/which2
* Tue Mar 24 2020 Than Ngo - 2.21-18- set correct alias for mksh
* Fri Jan 31 2020 Fedora Release Engineering - 2.21-17- Rebuilt for https://fedoraproject.org/wiki/Fedora_32_Mass_Rebuild
* Tue Nov 05 2019 Than Ngo - 2.21-16- set correct alias for ksh
* Sat Jul 27 2019 Fedora Release Engineering - 2.21-15- Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild
* Mon Feb 04 2019 Than Ngo - 2.21-14- bump release
* Mon Feb 04 2019 Than Ngo - 2.21-13- bump release
* Sun Feb 03 2019 Fedora Release Engineering - 2.21-12- Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild