Description of problem:
Attempted running the QA:Testcase install repository Hard drive variation test. Installation gets to "Preparing transaction from installation source" and then freezes.

Version-Release number of selected component:
anaconda-25.19-1

The following was filed automatically by anaconda:
anaconda 25.19-1 exception report
Traceback (most recent call first):
  File "/usr/lib64/python3.5/site-packages/pyanaconda/packaging/dnfpayload.py", line 828, in install
    raise packaging.PayloadError("DNF error: %s" % msg)
  File "/usr/lib64/python3.5/site-packages/pyanaconda/install.py", line 241, in doInstall
    payload.install()
  File "/usr/lib64/python3.5/threading.py", line 862, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/lib64/python3.5/site-packages/pyanaconda/threads.py", line 251, in run
    threading.Thread.run(self, *args, **kwargs)
pyanaconda.packaging.PayloadError: DNF error: error reading package headerTraceback (most recent call last):
  File "/usr/lib64/python3.5/site-packages/pyanaconda/packaging/dnfpayload.py", line 210, in do_transaction
    base.do_transaction(display=display)
  File "/usr/lib/python3.5/site-packages/dnf/base.py", line 563, in do_transaction
    self.transaction.populate_rpm_ts(self._ts)
  File "/usr/lib/python3.5/site-packages/dnf/transaction.py", line 183, in populate_rpm_ts
    hdr = tsi.installed.header
  File "/usr/lib/python3.5/site-packages/dnf/package.py", line 78, in header
    return dnf.rpm.header(self.localPkg())
  File "/usr/lib/python3.5/site-packages/dnf/rpm/__init__.py", line 58, in header
    return ts.hdrFromFdno(fdno)
  File "/usr/lib64/python3.5/site-packages/rpm/transaction.py", line 175, in hdrFromFdno
    raise rpm.error("error reading package header")
_rpm.error: error reading package header


Additional info:
addons:         com_redhat_kdump, com_redhat_docker
cmdline:        /usr/bin/python3  /sbin/anaconda
cmdline_file:   BOOT_IMAGE=vmlinuz initrd=initrd.img inst.stage2=hd:LABEL=Fedora-S-dvd-x86_64-rawh quiet inst.repo=hd:sdb3:/DVD.iso
executable:     /sbin/anaconda
hashmarkername: anaconda
kernel:         4.7.0-0.rc5.git3.1.fc25.x86_64
product:        Fedora
release:        Cannot get release name.
reproducible:   Not sure how to reproduce the problem
type:           anaconda
version:        rawhide