$ git clone -n https://src.fedoraproject.org/rpms/php-pecl-redis6.git /var/lib/mock/f42-build-side-1-3504320-45983/root/chroot_tmpdir/scmroot/php-pecl-redis6
Cloning into '/var/lib/mock/f42-build-side-1-3504320-45983/root/chroot_tmpdir/scmroot/php-pecl-redis6'...
$ git fetch origin c1c5f76c70caa7d4999a7782dd60a2d6efef8909:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-pecl-redis6
 * [new ref]         c1c5f76c70caa7d4999a7782dd60a2d6efef8909 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c1c5f76 update to 6.2.0