$ git clone -n https://src.fedoraproject.org/rpms/ocaml-base64.git /var/lib/mock/f41-build-side-1-2752251-31164/root/chroot_tmpdir/scmroot/ocaml-base64
Cloning into '/var/lib/mock/f41-build-side-1-2752251-31164/root/chroot_tmpdir/scmroot/ocaml-base64'...
$ git fetch origin 16e6288d89c08215dc8a29c1a4443c79bb71e7ed:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-base64
 * [new ref]         16e6288d89c08215dc8a29c1a4443c79bb71e7ed -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 16e6288 Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild