$ git clone -n https://src.fedoraproject.org/rpms/php-pecl-ds.git /var/lib/mock/f45-build-28048-627/root/chroot_tmpdir/scmroot/php-pecl-ds
Cloning into '/var/lib/mock/f45-build-28048-627/root/chroot_tmpdir/scmroot/php-pecl-ds'...
$ git fetch origin c8cca21709c96e70d0d14e76650db03cda44ebf1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-pecl-ds
 * [new ref]         c8cca21709c96e70d0d14e76650db03cda44ebf1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c8cca21 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild