$ git clone -n https://gitee.com/tomcruiseqi/protobuf.git /var/lib/mock/dist-an23-build-460947-73748/root/chroot_tmpdir/scmroot/protobuf
Cloning into '/var/lib/mock/dist-an23-build-460947-73748/root/chroot_tmpdir/scmroot/protobuf'...
$ git fetch origin b4fecd955854542e7332c8aa4162823247050a08:KOJI_FETCH_HEAD
From https://gitee.com/tomcruiseqi/protobuf
 * [new ref]         b4fecd955854542e7332c8aa4162823247050a08 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b4fecd9 Update to 31.1