$ git clone -n https://gitee.com/rabbitali/cups-pk-helper.git /var/lib/mock/dist-an23-build-490548-74493/root/chroot_tmpdir/scmroot/cups-pk-helper
Cloning into '/var/lib/mock/dist-an23-build-490548-74493/root/chroot_tmpdir/scmroot/cups-pk-helper'...
$ git fetch origin c92bb7ecf9d869fb474731ac5a4f7a91dbbdb623:KOJI_FETCH_HEAD
From https://gitee.com/rabbitali/cups-pk-helper
 * [new ref]         c92bb7ecf9d869fb474731ac5a4f7a91dbbdb623 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c92bb7e Update code from upstream