$ git clone -n https://gitee.com/src-anolis-os/ruby.git /var/lib/mock/dist-an8.6-build-160946-58580/root/chroot_tmpdir/scmroot/ruby Cloning into '/var/lib/mock/dist-an8.6-build-160946-58580/root/chroot_tmpdir/scmroot/ruby'... $ git reset --hard origin/a8-stream-2.5 fatal: ambiguous argument 'origin/a8-stream-2.5': unknown revision or path not in the working tree. Use '--' to separate paths from revisions, like this: 'git [...] -- [...]'