$ git clone -n https://src.fedoraproject.org/rpms/ocaml-yojson.git /var/lib/mock/f39-build-1797606-41766/root/chroot_tmpdir/scmroot/ocaml-yojson
Cloning into '/var/lib/mock/f39-build-1797606-41766/root/chroot_tmpdir/scmroot/ocaml-yojson'...
$ git fetch origin 67dcfda299129fa5142788a8c05aea73a2142a77:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-yojson
 * [new ref]         67dcfda299129fa5142788a8c05aea73a2142a77 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 67dcfda Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild