$ git clone -n https://gitee.com/zhoujiajia111/libass.git /var/lib/mock/dist-an23-dde-build-442944-73211/root/chroot_tmpdir/scmroot/libass
Cloning into '/var/lib/mock/dist-an23-dde-build-442944-73211/root/chroot_tmpdir/scmroot/libass'...
$ git fetch origin 6c72b2e2b056a381180c151bfda25e81905ede02:KOJI_FETCH_HEAD
From https://gitee.com/zhoujiajia111/libass
 * [new ref]         6c72b2e2b056a381180c151bfda25e81905ede02 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6c72b2e Update version to fix CVE-2020-24994