$ git clone -n https://src.fedoraproject.org/rpms/iwyu.git /var/lib/mock/f40-build-2562838-62144/root/chroot_tmpdir/scmroot/iwyu
Cloning into '/var/lib/mock/f40-build-2562838-62144/root/chroot_tmpdir/scmroot/iwyu'...
$ git fetch origin 3d2ea47cf93ee0524878286865161e3840302e5e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/iwyu
 * [new ref]         3d2ea47cf93ee0524878286865161e3840302e5e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3d2ea47 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild