$ git clone -n https://gitee.com/opencloudos-stream/ghc-Decimal.git /var/lib/mock/dist-ocs23-epol9-build-229980-18006/root/chroot_tmpdir/scmroot/ghc-Decimal
Cloning into '/var/lib/mock/dist-ocs23-epol9-build-229980-18006/root/chroot_tmpdir/scmroot/ghc-Decimal'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/ghc-Decimal
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4a51ca9 update