$ git clone -n https://src.fedoraproject.org/rpms/rubygem-ruby-libvirt.git /var/lib/mock/f40-build-2224234-52771/root/chroot_tmpdir/scmroot/rubygem-ruby-libvirt
Cloning into '/var/lib/mock/f40-build-2224234-52771/root/chroot_tmpdir/scmroot/rubygem-ruby-libvirt'...
$ git fetch origin 60f88a5e6c5a7fdbbd8c9ac13fd5b8623f2e81bc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-ruby-libvirt
 * [new ref]         60f88a5e6c5a7fdbbd8c9ac13fd5b8623f2e81bc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 60f88a5 Rebuilt for https://fedoraproject.org/wiki/Changes/Ruby_3.3