$ git clone -n https://src.fedoraproject.org/rpms/php-pecl-mongodb.git /var/lib/mock/f40-build-2244138-53701/root/chroot_tmpdir/scmroot/php-pecl-mongodb
Cloning into '/var/lib/mock/f40-build-2244138-53701/root/chroot_tmpdir/scmroot/php-pecl-mongodb'...
$ git fetch origin 909057085f4d0237af6179bc5acdec71ab6c627e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-pecl-mongodb
 * [new ref]         909057085f4d0237af6179bc5acdec71ab6c627e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9090570 v1.17.2