使用dnf info命令可以查看一个package的详细信息，包括其URL
$ dnf info libattr-devel
Available packages
Name : libattr-devel
Epoch : 0
Version : 2.5.2
Release : 4.fc41
Architecture : i686
Download size : 25.0 KiB
Installed size : 21.7 KiB
Source : attr-2.5.2-4.fc41.src.rpm
Repository : fedora
Summary : Files needed for building programs with libattr
URL : https://savannah.nongnu.org/projects/attr
License : LGPL-2.1-or-later
Description : This package contains header files and documentation needed to
: develop programs which make use of extended attributes.
: For Linux programs, the documented system call API is the
: recommended interface, but an SGI IRIX compatibility interface
: is also provided.
:
: Currently only ext2, ext3, ext4 and XFS support extended attributes.
: The SGI IRIX compatibility API built above the Linux system calls is
: used by programs such as xfsdump(8), xfsrestore(8) and xfs_fsr(8).
:
: You should install libattr-devel if you want to develop programs
: which make use of extended attributes. If you install libattr-devel,
: you'll also want to install attr.
Vendor : Fedora Project