$ git clone -n https://src.fedoraproject.org/rpms/powerdevil.git /var/lib/mock/f41-build-851743-166055/root/chroot_tmpdir/scmroot/powerdevil
Cloning into '/var/lib/mock/f41-build-851743-166055/root/chroot_tmpdir/scmroot/powerdevil'...
$ git fetch origin b8a4d700eaa1fdeb01a56247270569aa15026caa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/powerdevil
 * [new ref]         b8a4d700eaa1fdeb01a56247270569aa15026caa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b8a4d70 6.1.90