$ git clone -n https://gitee.com/dongshijiang/libass.git /var/lib/mock/dist-an23-dde-build-405523-72439/root/chroot_tmpdir/scmroot/libass
Cloning into '/var/lib/mock/dist-an23-dde-build-405523-72439/root/chroot_tmpdir/scmroot/libass'...
$ git fetch origin 497d6bf083bf36972ab84dddf30b838ac3fec970:KOJI_FETCH_HEAD
From https://gitee.com/dongshijiang/libass
 * [new ref]         497d6bf083bf36972ab84dddf30b838ac3fec970 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 497d6bf CVE fix CVE-2020-24994