$ git clone -n https://src.fedoraproject.org/rpms/hpx.git /var/lib/mock/f41-build-846123-162967/root/chroot_tmpdir/scmroot/hpx
Cloning into '/var/lib/mock/f41-build-846123-162967/root/chroot_tmpdir/scmroot/hpx'...
$ git fetch origin e5fc48e71d1e6b66b95c415efcbc52be1b9ea424:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/hpx
 * [new ref]         e5fc48e71d1e6b66b95c415efcbc52be1b9ea424 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e5fc48e Re-enable openmpi build