$ git clone -n https://src.fedoraproject.org/rpms/php-pecl-mongodb.git /var/lib/mock/f41-build-808562-145921/root/chroot_tmpdir/scmroot/php-pecl-mongodb
Cloning into '/var/lib/mock/f41-build-808562-145921/root/chroot_tmpdir/scmroot/php-pecl-mongodb'...
$ git fetch origin b41dbe579467db461fd0c0a53cdf08138b1947b0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-pecl-mongodb
 * [new ref]         b41dbe579467db461fd0c0a53cdf08138b1947b0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b41dbe5 v1.19.1