$ git clone -n https://src.fedoraproject.org/rpms/php-sebastian-object-reflector.git /var/lib/mock/f45-build-28307-629/root/chroot_tmpdir/scmroot/php-sebastian-object-reflector
Cloning into '/var/lib/mock/f45-build-28307-629/root/chroot_tmpdir/scmroot/php-sebastian-object-reflector'...
$ git fetch origin 906978271ce96ca9a21c2f6bfcfe42e321485e86:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-sebastian-object-reflector
 * [new ref]         906978271ce96ca9a21c2f6bfcfe42e321485e86 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9069782 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild