$ git clone -n https://src.fedoraproject.org/rpms/virt-top.git /var/lib/mock/f38-build-side-42-init-devel-724952-27316/root/chroot_tmpdir/scmroot/virt-top
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-724952-27316/root/chroot_tmpdir/scmroot/virt-top'...
$ git fetch origin 2610ea24a32e2da3de4073c5a287174328ab596a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/virt-top
 * [new ref]         2610ea24a32e2da3de4073c5a287174328ab596a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2610ea2 Rebuild OCaml packages for F38