$ git clone -n https://gitee.com/opencloudos-stream/pixman.git /var/lib/mock/dist-ocs23-build-234847-20391/root/chroot_tmpdir/scmroot/pixman
Cloning into '/var/lib/mock/dist-ocs23-build-234847-20391/root/chroot_tmpdir/scmroot/pixman'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/pixman
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4b0a5ed Rebuilt for loongarch release