$ git clone -n https://src.fedoraproject.org/rpms/mmsd-tng.git /var/lib/mock/f40-build-806469-145129/root/chroot_tmpdir/scmroot/mmsd-tng
Cloning into '/var/lib/mock/f40-build-806469-145129/root/chroot_tmpdir/scmroot/mmsd-tng'...
$ git fetch origin 83e5d39226f2e6af060fd9794ce482aa3c36defa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mmsd-tng
 * [new ref]         83e5d39226f2e6af060fd9794ce482aa3c36defa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 83e5d39 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild