$ git clone -n https://src.fedoraproject.org/rpms/libvirt-python.git /var/lib/mock/f40-build-1572436-24016/root/chroot_tmpdir/scmroot/libvirt-python
Cloning into '/var/lib/mock/f40-build-1572436-24016/root/chroot_tmpdir/scmroot/libvirt-python'...
$ git fetch origin e4457b7bd76387a6f9e57e8fde5cf889a4737a42:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libvirt-python
 * [new ref]         e4457b7bd76387a6f9e57e8fde5cf889a4737a42 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e4457b7 libvirt-python-10.1.0-1