$ git clone -n https://src.fedoraproject.org/rpms/igt-gpu-tools.git /var/lib/mock/f40-build-2236965-53529/root/chroot_tmpdir/scmroot/igt-gpu-tools
Cloning into '/var/lib/mock/f40-build-2236965-53529/root/chroot_tmpdir/scmroot/igt-gpu-tools'...
$ git fetch origin aee240be3210637b776107f71f3eba15afb22e0d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/igt-gpu-tools
 * [new ref]         aee240be3210637b776107f71f3eba15afb22e0d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aee240b Fix gtk-doc build on rawhide