$ git clone -n https://gitee.com/src-opencloudos-rpms/raptor2.git /var/lib/mock/dist-oc8-build-255129-84486/root/chroot_tmpdir/scmroot/raptor2
Cloning into '/var/lib/mock/dist-oc8-build-255129-84486/root/chroot_tmpdir/scmroot/raptor2'...
$ git fetch origin b91810d94c0b12ab2aeae110e6ce7215229ef52b:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/raptor2
 * [new ref]         b91810d94c0b12ab2aeae110e6ce7215229ef52b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b91810d import raptor2-2.0.15-18.tl3