Looks like there was a change in rpm in Rawhide after May 11th and building zipl now fails with

...
make[3]: Leaving directory '/builddir/build/BUILD/s390-tools-2.13.0/libutil'
gcc -Wl,-z,relro -Wl,--as-needed  -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -Wl,-z,noexecstack -no-pie zipl.o misc.o error.o scan.o job.o boot.o bootmap.o disk.o install.o ../..//zipl/boot/data.o ../..//libutil/libutil.a /usr/lib64/librpm.so  -o zipl
/usr/bin/ld: scan.o: in function `split_cmp':
/builddir/build/BUILD/s390-tools-2.13.0/zipl/src/scan.c:707: undefined reference to `rpmvercmp'
/usr/bin/ld: /builddir/build/BUILD/s390-tools-2.13.0/zipl/src/scan.c:713: undefined reference to `rpmvercmp'
/usr/bin/ld: /builddir/build/BUILD/s390-tools-2.13.0/zipl/src/scan.c:718: undefined reference to `rpmvercmp'
/usr/bin/ld: /builddir/build/BUILD/s390-tools-2.13.0/zipl/src/scan.c:713: undefined reference to `rpmvercmp'
collect2: error: ld returned 1 exit status
make[2]: *** [../../common.mak:243: zipl] Error 1


see https://koji.fedoraproject.org/koji/taskinfo?taskID=45273585 for full details

Version-Release number of selected component (if applicable):
s390utils-2.13.0-2.fc33
rpm-4.16.0-0.beta1.1.fc33.1