$ git clone -n https://src.fedoraproject.org/rpms/kubernetes.git /var/lib/mock/f40-build-769597-125728/root/chroot_tmpdir/scmroot/kubernetes
Cloning into '/var/lib/mock/f40-build-769597-125728/root/chroot_tmpdir/scmroot/kubernetes'...
$ git fetch origin a6fc509fe90caf80e1a5a10b7d3bb794f455b71e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kubernetes
 * [new ref]         a6fc509fe90caf80e1a5a10b7d3bb794f455b71e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a6fc509 Add source file for v1.28.5