$ git clone -n https://src.fedoraproject.org/rpms/php-sebastian-object-reflector4.git /var/lib/mock/f42-build-3224804-41162/root/chroot_tmpdir/scmroot/php-sebastian-object-reflector4
Cloning into '/var/lib/mock/f42-build-3224804-41162/root/chroot_tmpdir/scmroot/php-sebastian-object-reflector4'...
$ git fetch origin 2471121bc9c9fe0426801ccab0450ef4b8288816:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-sebastian-object-reflector4
 * [new ref]         2471121bc9c9fe0426801ccab0450ef4b8288816 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2471121 enable test suite