$ git clone -n https://src.fedoraproject.org/rpms/ksystemstats.git /var/lib/mock/f41-build-847781-164121/root/chroot_tmpdir/scmroot/ksystemstats
Cloning into '/var/lib/mock/f41-build-847781-164121/root/chroot_tmpdir/scmroot/ksystemstats'...
$ git fetch origin fe565153cca7458cd247770a9384a80e0d219db6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ksystemstats
 * [new ref]         fe565153cca7458cd247770a9384a80e0d219db6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fe56515 6.1.5