$ git clone -n https://src.fedoraproject.org/rpms/massif-visualizer.git /var/lib/mock/f40-build-1777652-24803/root/chroot_tmpdir/scmroot/massif-visualizer
Cloning into '/var/lib/mock/f40-build-1777652-24803/root/chroot_tmpdir/scmroot/massif-visualizer'...
$ git fetch origin d9e936789a83b4d2b3b587f0e95d3ef3e34cffa7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/massif-visualizer
 * [new ref]         d9e936789a83b4d2b3b587f0e95d3ef3e34cffa7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d9e9367 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild