$ git clone -n https://src.fedoraproject.org/rpms/pari.git /var/lib/mock/f41-build-856890-167809/root/chroot_tmpdir/scmroot/pari
Cloning into '/var/lib/mock/f41-build-856890-167809/root/chroot_tmpdir/scmroot/pari'...
$ git fetch origin 96312721920b9ca5b122a4d7b10ab9efe78b1ef5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pari
 * [new ref]         96312721920b9ca5b122a4d7b10ab9efe78b1ef5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9631272 Version 2.17.0