$ git clone -n https://src.fedoraproject.org/rpms/php-pecl-mongodb.git /var/lib/mock/f40-build-733894-105550/root/chroot_tmpdir/scmroot/php-pecl-mongodb
Cloning into '/var/lib/mock/f40-build-733894-105550/root/chroot_tmpdir/scmroot/php-pecl-mongodb'...
$ git fetch origin cbb01c45fe04a49d13c3d6cb747fa803b8acc57d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-pecl-mongodb
 * [new ref]         cbb01c45fe04a49d13c3d6cb747fa803b8acc57d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cbb01c4 rebuild for https://fedoraproject.org/wiki/Changes/php83