$ git clone -n https://gitee.com/opencloudos-stream/ocaml-srpm-macros.git /var/lib/mock/dist-oc9-epol-build-105835-66649/root/chroot_tmpdir/scmroot/ocaml-srpm-macros
Cloning into '/var/lib/mock/dist-oc9-epol-build-105835-66649/root/chroot_tmpdir/scmroot/ocaml-srpm-macros'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/ocaml-srpm-macros
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6441bd5 Rebuilt for loongarch release