$ git clone -n https://src.fedoraproject.org/rpms/ocaml-fieldslib.git /var/lib/mock/f39-build-2033809-47805/root/chroot_tmpdir/scmroot/ocaml-fieldslib
Cloning into '/var/lib/mock/f39-build-2033809-47805/root/chroot_tmpdir/scmroot/ocaml-fieldslib'...
$ git fetch origin e19ad90b90b35a22442bc19090a0dbd838963378:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-fieldslib
 * [new ref]         e19ad90b90b35a22442bc19090a0dbd838963378 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e19ad90 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild