$ git clone -n https://src.fedoraproject.org/rpms/alt-ergo.git /var/lib/mock/f41-build-811814-147589/root/chroot_tmpdir/scmroot/alt-ergo
Cloning into '/var/lib/mock/f41-build-811814-147589/root/chroot_tmpdir/scmroot/alt-ergo'...
$ git fetch origin 8d4dec6e83e7c845f311c787f4f077609a1d835c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/alt-ergo
 * [new ref]         8d4dec6e83e7c845f311c787f4f077609a1d835c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8d4dec6 OCaml 5.2.0 for Fedora 41