$ git clone -n https://gitee.com/src-opencloudos-rpms/pixman.git /var/lib/mock/dist-oc8-build-66435-16685/root/chroot_tmpdir/scmroot/pixman
Cloning into '/var/lib/mock/dist-oc8-build-66435-16685/root/chroot_tmpdir/scmroot/pixman'...
$ git fetch origin d866f8e05445da71629c2c1f078e14bbcd1300b3:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/pixman
 * [new ref]         d866f8e05445da71629c2c1f078e14bbcd1300b3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d866f8e import pixman-0.38.4-3.tl3