$ git clone -n https://src.fedoraproject.org/rpms/ocaml-fileutils.git /var/lib/mock/f42-build-865900-173583/root/chroot_tmpdir/scmroot/ocaml-fileutils
Cloning into '/var/lib/mock/f42-build-865900-173583/root/chroot_tmpdir/scmroot/ocaml-fileutils'...
$ git fetch origin 26e1fe9f861de23a4105c779325718f5da9885c9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-fileutils
 * [new ref]         26e1fe9f861de23a4105c779325718f5da9885c9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 26e1fe9 OCaml 5.3.0 rebuild for Fedora 42