$ git clone -n https://src.fedoraproject.org/rpms/python-nipy.git /var/lib/mock/f38-build-side-42-init-devel-810626-28285/root/chroot_tmpdir/scmroot/python-nipy
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-810626-28285/root/chroot_tmpdir/scmroot/python-nipy'...
$ git fetch origin d5af517752b1c734a99f791a9827437b748d1f01:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-nipy
 * [new ref]         d5af517752b1c734a99f791a9827437b748d1f01 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d5af517 Convert to rpmautospec