$ git clone -n https://src.fedoraproject.org/rpms/powerstat.git /var/lib/mock/f42-build-3409182-45146/root/chroot_tmpdir/scmroot/powerstat
Cloning into '/var/lib/mock/f42-build-3409182-45146/root/chroot_tmpdir/scmroot/powerstat'...
$ git fetch origin 247b8391e8a4d1f16a3294388bea07b6e21e67e7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/powerstat
 * [new ref]         247b8391e8a4d1f16a3294388bea07b6e21e67e7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 247b839 Update to 0.04.04