$ git clone -n https://src.fedoraproject.org/rpms/libmetalink.git /var/lib/mock/f41-build-1605551-24064/root/chroot_tmpdir/scmroot/libmetalink
Cloning into '/var/lib/mock/f41-build-1605551-24064/root/chroot_tmpdir/scmroot/libmetalink'...
$ git fetch origin 268ce9e9fdfbe1a9a1ffcfde32c3b08041662b6d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libmetalink
 * [new ref]         268ce9e9fdfbe1a9a1ffcfde32c3b08041662b6d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 268ce9e Obsolete and unsupported upstream for over ten years; was required by wget, but that was retired in favor of wget2 as part of https://fedoraproject.org/wiki/Changes/Wget2asWget, so there is absolutely no further reason to keep this package around.