$ git clone -n https://src.fedoraproject.org/rpms/ocaml-ppx-stable-witness.git /var/lib/mock/f39-build-1849959-42228/root/chroot_tmpdir/scmroot/ocaml-ppx-stable-witness
Cloning into '/var/lib/mock/f39-build-1849959-42228/root/chroot_tmpdir/scmroot/ocaml-ppx-stable-witness'...
$ git fetch origin 2b06b7f02c188de8db3cef0e9170eb96d7ad20e7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-ppx-stable-witness
 * [new ref]         2b06b7f02c188de8db3cef0e9170eb96d7ad20e7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2b06b7f Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild