$ git clone -n https://gitee.com/opencloudos-stream/libjpeg-turbo.git /var/lib/mock/dist-ocs23-build-25402-1191/root/chroot_tmpdir/scmroot/libjpeg-turbo
Cloning into '/var/lib/mock/dist-ocs23-build-25402-1191/root/chroot_tmpdir/scmroot/libjpeg-turbo'...
$ git fetch origin HEAD:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/libjpeg-turbo
 * [new ref]                    -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c98d89d !2 downgrade to 2.1.4 Merge pull request !2 from abushwang/master