$ git clone -n https://src.fedoraproject.org/rpms/boxed-cpp.git /var/lib/mock/f40-build-2274775-55029/root/chroot_tmpdir/scmroot/boxed-cpp
Cloning into '/var/lib/mock/f40-build-2274775-55029/root/chroot_tmpdir/scmroot/boxed-cpp'...
$ git fetch origin ee521565a6ad66202fb9f2093c8759f5656a8971:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/boxed-cpp
 * [new ref]         ee521565a6ad66202fb9f2093c8759f5656a8971 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ee52156 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild