$ git clone -n https://gitee.com/mgb01105731/gdk-pixbuf2.git /var/lib/mock/dist-an23.2-build-421254-72903/root/chroot_tmpdir/scmroot/gdk-pixbuf2
Cloning into '/var/lib/mock/dist-an23.2-build-421254-72903/root/chroot_tmpdir/scmroot/gdk-pixbuf2'...
$ git fetch origin a23.2:KOJI_FETCH_HEAD
fatal: couldn't find remote ref a23.2
$ git reset --hard origin/a23.2
fatal: ambiguous argument 'origin/a23.2': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions, like this:
'git <command> [<revision>...] -- [<file>...]'