$ git clone -n https://src.fedoraproject.org/rpms/pspp.git /var/lib/mock/f40-build-2154562-50916/root/chroot_tmpdir/scmroot/pspp
Cloning into '/var/lib/mock/f40-build-2154562-50916/root/chroot_tmpdir/scmroot/pspp'...
$ git fetch origin f914ed5df585b5f9558576c733b9ff8d09cf0bff:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pspp
 * [new ref]         f914ed5df585b5f9558576c733b9ff8d09cf0bff -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f914ed5 Verify GPG signature