$ git clone -n https://src.fedoraproject.org/rpms/ksystemstats.git /var/lib/mock/f40-build-2096502-50409/root/chroot_tmpdir/scmroot/ksystemstats
Cloning into '/var/lib/mock/f40-build-2096502-50409/root/chroot_tmpdir/scmroot/ksystemstats'...
$ git fetch origin 25fa8c39d5faf14b506a947cfbf97fe3b540ff19:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ksystemstats
 * [new ref]         25fa8c39d5faf14b506a947cfbf97fe3b540ff19 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 25fa8c3 fix: upload missing sources