Fedora 镜像 gpgkey 问题

当前的 fedora.repo 文件内容如下：

[fedora] 
name=Fedora $releasever - $basearch - aliyun
#failovermethod=priority 
baseurl=http://mirrors.aliyun.com/fedora/releases/$releasever/Everything/$basearch/os/ 
#mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=fedora-$releasever&arch=$basearch 
enabled=1 
metadata_expire=7d 
gpgcheck=1 
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-$basearch 

[fedora-debuginfo] 
name=Fedora $releasever - $basearch - Debug - aliyun
#failovermethod=priority 
baseurl=http://mirrors.aliyun.com/fedora/releases/$releasever/Everything/$basearch/debug/tree/ 
#mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=fedora-debug-$releasever&arch=$basearch 
enabled=0 
metadata_expire=7d 
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-$basearch 

[fedora-source] 
name=Fedora $releasever - Source - aliyun
#failovermethod=priority 
baseurl=http://mirrors.aliyun.com/fedora/releases/$releasever/Everything/source/tree/ 
#mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=fedora-source-$releasever&arch=$basearch 
enabled=0 
metadata_expire=7d 
gpgcheck=1 
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-$basearch

可以注意到 gpgkey 均为 file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-$basearch，但是查看 fedora 的原生 fedora.repo 文件或是其他镜像站的 fedora.repo 文件，其 gpgkey 均为 file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-$releasever-$basearch，多了 $releasever 的指向

这个不同可能导致在升级 Fedora 版本时出现 gpgkey 问题