$ git clone -n https://src.fedoraproject.org/rpms/iwyu.git /var/lib/mock/f39-build-1932664-43116/root/chroot_tmpdir/scmroot/iwyu
Cloning into '/var/lib/mock/f39-build-1932664-43116/root/chroot_tmpdir/scmroot/iwyu'...
$ git fetch origin 9aa9202727c0b71d7e724fc03bc2b6404602f114:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/iwyu
 * [new ref]         9aa9202727c0b71d7e724fc03bc2b6404602f114 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9aa9202 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild