$ git clone -n https://src.fedoraproject.org/rpms/htmlcxx.git /var/lib/mock/f40-build-791796-137740/root/chroot_tmpdir/scmroot/htmlcxx
Cloning into '/var/lib/mock/f40-build-791796-137740/root/chroot_tmpdir/scmroot/htmlcxx'...
$ git fetch origin ad9df9d06e4b52094e75b4c71bb705283dbfeb9d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/htmlcxx
 * [new ref]         ad9df9d06e4b52094e75b4c71bb705283dbfeb9d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ad9df9d Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild