$ git clone -n https://gitee.com/fundawang/polkit.git /var/lib/mock/dist-an23-build-290806-64987/root/chroot_tmpdir/scmroot/polkit
Cloning into '/var/lib/mock/dist-an23-build-290806-64987/root/chroot_tmpdir/scmroot/polkit'...
$ git fetch origin 37e53509008a1c18609580a06891dfc58a3fd939:KOJI_FETCH_HEAD
From https://gitee.com/fundawang/polkit
 * [new ref]         37e53509008a1c18609580a06891dfc58a3fd939 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 37e5350 123