$ git clone -n https://src.fedoraproject.org/rpms/ocaml-markup.git /var/lib/mock/f42-build-865901-173583/root/chroot_tmpdir/scmroot/ocaml-markup
Cloning into '/var/lib/mock/f42-build-865901-173583/root/chroot_tmpdir/scmroot/ocaml-markup'...
$ git fetch origin 91e35bf3052da2c0f78fe666a226594e958c990c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-markup
 * [new ref]         91e35bf3052da2c0f78fe666a226594e958c990c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 91e35bf OCaml 5.3.0 rebuild for Fedora 42