$ git clone -n https://gitee.com/zhoujiajia111/libass.git /var/lib/mock/dist-an23-dde-build-443099-73211/root/chroot_tmpdir/scmroot/libass
Cloning into '/var/lib/mock/dist-an23-dde-build-443099-73211/root/chroot_tmpdir/scmroot/libass'...
$ git fetch origin 3fbff28da07130b6e9556cce8f87b3cc6cf20205:KOJI_FETCH_HEAD
From https://gitee.com/zhoujiajia111/libass
 * [new ref]         3fbff28da07130b6e9556cce8f87b3cc6cf20205 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3fbff28 update to 0.15.0