$ git clone -n https://src.fedoraproject.org/rpms/veristat.git /var/lib/mock/f39-build-2315893-57975/root/chroot_tmpdir/scmroot/veristat
Cloning into '/var/lib/mock/f39-build-2315893-57975/root/chroot_tmpdir/scmroot/veristat'...
$ git fetch origin e54b107ce6ee583d2b2446fd61ac34d44090fb2e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/veristat
 * [new ref]         e54b107ce6ee583d2b2446fd61ac34d44090fb2e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e54b107 Update to 0.3