$ git clone -n https://src.fedoraproject.org/rpms/mongo-cxx-driver.git /var/lib/mock/f38-build-side-42-init-devel-1288302-30674/root/chroot_tmpdir/scmroot/mongo-cxx-driver
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1288302-30674/root/chroot_tmpdir/scmroot/mongo-cxx-driver'...
$ git fetch origin a23040c6d07a0e023a1fda8a005bdf48ccfefb24:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mongo-cxx-driver
 * [new ref]         a23040c6d07a0e023a1fda8a005bdf48ccfefb24 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a23040c Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild