$ git clone -n https://src.fedoraproject.org/rpms/openvdb.git /var/lib/mock/f42-build-side-1-3588271-46944/root/chroot_tmpdir/scmroot/openvdb
Cloning into '/var/lib/mock/f42-build-side-1-3588271-46944/root/chroot_tmpdir/scmroot/openvdb'...
$ git fetch origin 4b8dbfd06cac86ce1dbbb7e697952d529e13c923:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/openvdb
 * [new ref]         4b8dbfd06cac86ce1dbbb7e697952d529e13c923 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4b8dbfd Rebuild for tbb 2022.0