$ git clone -n https://src.fedoraproject.org/rpms/ocaml.git /var/lib/mock/f39-build-1453181-32872/root/chroot_tmpdir/scmroot/ocaml
Cloning into '/var/lib/mock/f39-build-1453181-32872/root/chroot_tmpdir/scmroot/ocaml'...
$ git fetch origin 4a09b96d7b6c97f47d2824aab1d942aee0daa7a7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml
 * [new ref]         4a09b96d7b6c97f47d2824aab1d942aee0daa7a7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4a09b96 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild