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Description of problem:
YUM does not decode "baseurl" field from repo file when it comes to calculate packages checksum during package installation. Encoded characters like space (%20) in path should be decoded before checksum calculation

Version-Release number of selected component (if applicable):
4.2.17
  Installed: dnf-0:4.2.17-6.el8.noarch at Thu Jul  2 07:33:19 2020
  Built    : CentOS Buildsys <bugs> at Fri Apr 24 19:58:19 2020

  Installed: rpm-0:4.14.2-37.el8.x86_64 at Thu Jul  2 07:33:18 2020
  Built    : CentOS Buildsys <bugs> at Fri Apr 24 03:17:18 2020

How reproducible:
100%

Steps to Reproduce:
1. Create local yum repository with space in baseurl field like "file:///some/path/with%20space/repo"
2. Try to install any package from your local repository


Actual results:
During installation such error appears:

Error opening file for checksum: /some/path/with%20space/repo/zookeeper-libs-3.4.9-6.x86_64.rpm
Package "zookeeper-libs-1:3.4.9-6.x86_64" from local repository "my-repository" has incorrect checksum
Error: Some packages from local repository have incorrect checksum


Expected results:
Package installs correctly


Additional info:

PRs:
https://github.com/rpm-software-management/dnf/pull/1665
https://github.com/rpm-software-management/libdnf/pull/1035
https://github.com/rpm-software-management/ci-dnf-stack/pull/894

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (dnf bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2021:1657