$ git clone -n https://src.fedoraproject.org/rpms/alt-ergo.git /var/lib/mock/f38-build-side-42-init-devel-585197-26108/root/chroot_tmpdir/scmroot/alt-ergo
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-585197-26108/root/chroot_tmpdir/scmroot/alt-ergo'...
$ git fetch origin 04eaf57e3a54133ed8291fe7604ae3e96321bbff:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/alt-ergo
 * [new ref]         04eaf57e3a54133ed8291fe7604ae3e96321bbff -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 04eaf57 Dune 3.7.0 changed the install location of mli files