$ git clone -n https://gitee.com/ocs-bot/jbig2dec.git /var/lib/mock/dist-ocs23-build-114542-7690/root/chroot_tmpdir/scmroot/jbig2dec
Cloning into '/var/lib/mock/dist-ocs23-build-114542-7690/root/chroot_tmpdir/scmroot/jbig2dec'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/ocs-bot/jbig2dec
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1d3c913 update Source0