$ git clone -n https://src.fedoraproject.org/rpms/cross-gcc.git /var/lib/mock/f40-build-801133-143719/root/chroot_tmpdir/scmroot/cross-gcc
Cloning into '/var/lib/mock/f40-build-801133-143719/root/chroot_tmpdir/scmroot/cross-gcc'...
$ git fetch origin 9809862835d5998a168e16200938e0d1e49a0be0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cross-gcc
 * [new ref]         9809862835d5998a168e16200938e0d1e49a0be0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9809862 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild