$ git clone -n https://gitee.com/wenyuzifang/trousers.git /var/lib/mock/dist-an23-build-464361-73881/root/chroot_tmpdir/scmroot/trousers
Cloning into '/var/lib/mock/dist-an23-build-464361-73881/root/chroot_tmpdir/scmroot/trousers'...
$ git fetch origin a80de907764ba997bd74daae329b671c4fca91ff:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/trousers
 * [new ref]         a80de907764ba997bd74daae329b671c4fca91ff -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a80de90 Update code from upstream