$ git clone -n https://gitee.com/cobratoxin/libXrender.git /var/lib/mock/dist-an8.8-build-290741-65028/root/chroot_tmpdir/scmroot/libXrender
Cloning into '/var/lib/mock/dist-an8.8-build-290741-65028/root/chroot_tmpdir/scmroot/libXrender'...
$ git fetch origin 27dd465b7bcdfcb5496f059d095adb8a29239d88:KOJI_FETCH_HEAD
From https://gitee.com/cobratoxin/libXrender
 * [new ref]         27dd465b7bcdfcb5496f059d095adb8a29239d88 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 27dd465 Add doc sub package