$ git clone -n https://src.fedoraproject.org/rpms/php-pecl-memcached.git /var/lib/mock/f40-build-2050816-49032/root/chroot_tmpdir/scmroot/php-pecl-memcached
Cloning into '/var/lib/mock/f40-build-2050816-49032/root/chroot_tmpdir/scmroot/php-pecl-memcached'...
$ git fetch origin ef8261537dae9254f2d51700113f1bc212214324:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-pecl-memcached
 * [new ref]         ef8261537dae9254f2d51700113f1bc212214324 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ef82615 rebuild for https://fedoraproject.org/wiki/Changes/php83