$ git clone -n https://src.fedoraproject.org/rpms/php-sebastian-object-reflector4.git /var/lib/mock/f45-build-28336-629/root/chroot_tmpdir/scmroot/php-sebastian-object-reflector4
Cloning into '/var/lib/mock/f45-build-28336-629/root/chroot_tmpdir/scmroot/php-sebastian-object-reflector4'...
$ git fetch origin f05b991c770007c30cfa3cba900b50123adce1a4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-sebastian-object-reflector4
 * [new ref]         f05b991c770007c30cfa3cba900b50123adce1a4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f05b991 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild