$ git clone -n git+ssh://git@gitee.com/anolis/rel-eng.git /tmp/koji/tasks/6197/266197/rel-eng
Cloning into '/tmp/koji/tasks/6197/266197/rel-eng'...
$ git reset --hard 8.4
fatal: ambiguous argument '8.4': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions, like this:
'git <command> [<revision>...] -- [<file>...]'