$ git clone -n https://src.fedoraproject.org/rpms/gnome-boxes.git /var/lib/mock/f40-build-788332-135103/root/chroot_tmpdir/scmroot/gnome-boxes
Cloning into '/var/lib/mock/f40-build-788332-135103/root/chroot_tmpdir/scmroot/gnome-boxes'...
$ git fetch origin f2a392fd747c0ce147450526b85b5fd0b210aa33:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-boxes
 * [new ref]         f2a392fd747c0ce147450526b85b5fd0b210aa33 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f2a392f Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild