$ git clone -n https://src.fedoraproject.org/rpms/hpx.git /var/lib/mock/f40-build-2236860-53525/root/chroot_tmpdir/scmroot/hpx
Cloning into '/var/lib/mock/f40-build-2236860-53525/root/chroot_tmpdir/scmroot/hpx'...
$ git fetch origin 259f11043afff9193e4538f84781c10597a6d684:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/hpx
 * [new ref]         259f11043afff9193e4538f84781c10597a6d684 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 259f110 Rebuild for openmpi 5.0.0, drops support for i686