$ git clone -n https://src.fedoraproject.org/rpms/ocaml-tyxml.git /var/lib/mock/f40-build-2318049-58215/root/chroot_tmpdir/scmroot/ocaml-tyxml
Cloning into '/var/lib/mock/f40-build-2318049-58215/root/chroot_tmpdir/scmroot/ocaml-tyxml'...
$ git fetch origin 7067e798f876ada39c92ce04ad82fc6a91c32b92:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-tyxml
 * [new ref]         7067e798f876ada39c92ce04ad82fc6a91c32b92 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7067e79 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild