$ git clone -n https://gitee.com/opencloudos-stream/ghc-old-locale.git /var/lib/mock/dist-oc9-epol-build-91505-59209/root/chroot_tmpdir/scmroot/ghc-old-locale
Cloning into '/var/lib/mock/dist-oc9-epol-build-91505-59209/root/chroot_tmpdir/scmroot/ghc-old-locale'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/ghc-old-locale
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4c284a6 update