$ git clone -n https://src.fedoraproject.org/rpms/powerdevil.git /var/lib/mock/f40-build-796022-140456/root/chroot_tmpdir/scmroot/powerdevil
Cloning into '/var/lib/mock/f40-build-796022-140456/root/chroot_tmpdir/scmroot/powerdevil'...
$ git fetch origin 688097b8779e69c8d0d33cfb86177992c4052fbf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/powerdevil
 * [new ref]         688097b8779e69c8d0d33cfb86177992c4052fbf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 688097b 6.0.2