$ git clone -n https://src.fedoraproject.org/rpms/php-pecl-memcache.git /var/lib/mock/f45-build-28135-628/root/chroot_tmpdir/scmroot/php-pecl-memcache
Cloning into '/var/lib/mock/f45-build-28135-628/root/chroot_tmpdir/scmroot/php-pecl-memcache'...
$ git fetch origin 029bafc1a4e6e2b3e06dacb58a6de689a8385657:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-pecl-memcache
 * [new ref]         029bafc1a4e6e2b3e06dacb58a6de689a8385657 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 029bafc Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild