$ git clone -n https://src.fedoraproject.org/rpms/powertop.git /var/lib/mock/f45-build-28865-633/root/chroot_tmpdir/scmroot/powertop
Cloning into '/var/lib/mock/f45-build-28865-633/root/chroot_tmpdir/scmroot/powertop'...
$ git fetch origin 5e7fc7989ba204122d031c1990eb3ced7e9d3d4c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/powertop
 * [new ref]         5e7fc7989ba204122d031c1990eb3ced7e9d3d4c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5e7fc79 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild