$ git clone -n https://gitee.com/opencloudos-stream/tcl-thread.git /var/lib/mock/dist-oc9-epol-build-84791-57390/root/chroot_tmpdir/scmroot/tcl-thread
Cloning into '/var/lib/mock/dist-oc9-epol-build-84791-57390/root/chroot_tmpdir/scmroot/tcl-thread'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/tcl-thread
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5d45f00 package init