$ git clone -n https://src.fedoraproject.org/rpms/hpl.git /var/lib/mock/f45-build-13471-451/root/chroot_tmpdir/scmroot/hpl
Cloning into '/var/lib/mock/f45-build-13471-451/root/chroot_tmpdir/scmroot/hpl'...
$ git fetch origin 8a101a95dc94dac731370fdc1d925031fc3e4902:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/hpl
 * [new ref]         8a101a95dc94dac731370fdc1d925031fc3e4902 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8a101a9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild