$ git clone -n https://src.fedoraproject.org/rpms/opam.git /var/lib/mock/f41-build-811870-147589/root/chroot_tmpdir/scmroot/opam
Cloning into '/var/lib/mock/f41-build-811870-147589/root/chroot_tmpdir/scmroot/opam'...
$ git fetch origin c2a01bfa3dd81583e2c39c48cf7282ca1fa6a0e4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/opam
 * [new ref]         c2a01bfa3dd81583e2c39c48cf7282ca1fa6a0e4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c2a01bf OCaml 5.2.0 for Fedora 41