$ git clone -n https://src.fedoraproject.org/rpms/python-pyrad.git /var/lib/mock/f41-build-side-1-2768236-32092/root/chroot_tmpdir/scmroot/python-pyrad
Cloning into '/var/lib/mock/f41-build-side-1-2768236-32092/root/chroot_tmpdir/scmroot/python-pyrad'...
$ git fetch origin 55bf222253ccd4e6df9fe71d8768c6924f5d5711:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-pyrad
 * [new ref]         55bf222253ccd4e6df9fe71d8768c6924f5d5711 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 55bf222 Use standard macros