$ git clone -n https://src.fedoraproject.org/rpms/rust-fixed.git /var/lib/mock/f40-build-1858802-24992/root/chroot_tmpdir/scmroot/rust-fixed
Cloning into '/var/lib/mock/f40-build-1858802-24992/root/chroot_tmpdir/scmroot/rust-fixed'...
$ git fetch origin de193ffa4a5bf5432707ff8f5a755457bfef5df7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-fixed
 * [new ref]         de193ffa4a5bf5432707ff8f5a755457bfef5df7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at de193ff Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild