$ git clone -n https://src.fedoraproject.org/rpms/php-pecl-memcached.git /var/lib/mock/f45-build-28152-628/root/chroot_tmpdir/scmroot/php-pecl-memcached
Cloning into '/var/lib/mock/f45-build-28152-628/root/chroot_tmpdir/scmroot/php-pecl-memcached'...
$ git fetch origin 5e0a749f254975b54c218bbbfbb48a1e6053a641:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-pecl-memcached
 * [new ref]         5e0a749f254975b54c218bbbfbb48a1e6053a641 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5e0a749 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild