$ git clone -n https://src.fedoraproject.org/rpms/brightnessctl.git /var/lib/mock/f40-build-801453-143788/root/chroot_tmpdir/scmroot/brightnessctl
Cloning into '/var/lib/mock/f40-build-801453-143788/root/chroot_tmpdir/scmroot/brightnessctl'...
$ git fetch origin 720432f30574b1f3f54367ec78c3b2bdf3a4b08e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/brightnessctl
 * [new ref]         720432f30574b1f3f54367ec78c3b2bdf3a4b08e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 720432f Backport upstream patch for percentage output