$ git clone -n https://src.fedoraproject.org/rpms/powerdevil.git /var/lib/mock/f42-build-side-1-3584413-46893/root/chroot_tmpdir/scmroot/powerdevil
Cloning into '/var/lib/mock/f42-build-side-1-3584413-46893/root/chroot_tmpdir/scmroot/powerdevil'...
$ git fetch origin 95dae28b5cc2c611a38e3bdb0f1764dd0e8cdf8b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/powerdevil
 * [new ref]         95dae28b5cc2c611a38e3bdb0f1764dd0e8cdf8b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 95dae28 Forgot some bits