$ git clone -n https://src.fedoraproject.org/rpms/php-pecl-mongodb.git /var/lib/mock/f41-build-847785-164121/root/chroot_tmpdir/scmroot/php-pecl-mongodb
Cloning into '/var/lib/mock/f41-build-847785-164121/root/chroot_tmpdir/scmroot/php-pecl-mongodb'...
$ git fetch origin 168cf7136364aae3862cafea1e9531856ec8e499:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-pecl-mongodb
 * [new ref]         168cf7136364aae3862cafea1e9531856ec8e499 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 168cf71 update to 1.19.4