$ git clone -n https://src.fedoraproject.org/rpms/ppp.git /var/lib/mock/f42-build-867473-175511/root/chroot_tmpdir/scmroot/ppp
Cloning into '/var/lib/mock/f42-build-867473-175511/root/chroot_tmpdir/scmroot/ppp'...
$ git fetch origin 19a05d6af61664c3c65ae66a557f33fe4dbb9e78:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ppp
 * [new ref]         19a05d6af61664c3c65ae66a557f33fe4dbb9e78 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 19a05d6 Rebuilt for the bin-sbin merge (2nd attempt)