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Build Identifier: 

I have created an issue at https://github.com/containers/podman/issues/6923,
but I just found out that containers-common-1.1.0-1.el7.x86_64.rpm in
https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/CentOS_7/x86_64/
has different SHA1 checksum compared to
https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/CentOS_7/repodata/primary.xml.gz.

Reproducible: Always

Steps to Reproduce:
1. Install podman latest stable from Kubic Project on Centos 7 as recommended
by [Podman Installation](https://podman.io/getting-started/installation.html):
```
$ sudo curl -L -o /etc/yum.repos.d/devel:kubic:libcontainers:stable.repo
https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/CentOS_7/devel:kubic:libcontainers:stable.repo
$ sudo yum -y install podman
```
Actual Results:  
The followings are the error message from `sudo yum -y install podman`:

```
https://download.opensuse.org/repositories/devel%3A/kubic%3A/libcontainers%3A/stable/CentOS_7/x86_64/containers-common-1.1.0-1.el7.x86_64.rpm:
[Errno -1] Package does not match intended download. Suggestion: run yum
--enablerepo=devel_kubic_libcontainers_stable clean metadata
Trying other mirror.

Error downloading packages:
2:containers-common-1.1.0-1.el7.x86_64: [Errno 256] No more mirrors to try.
```

Expected Results:  
The podman installation should success.