$ git clone -n https://gitee.com/renbo02/ecj.git /var/lib/mock/dist-an8.9-build-386905-71973/root/chroot_tmpdir/scmroot/ecj
Cloning into '/var/lib/mock/dist-an8.9-build-386905-71973/root/chroot_tmpdir/scmroot/ecj'...
$ git fetch origin f92ae9744fa122dd44265828e659ddfaf63c00e5:KOJI_FETCH_HEAD
From https://gitee.com/renbo02/ecj
 * [new ref]         f92ae9744fa122dd44265828e659ddfaf63c00e5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f92ae97 update to ecj-4.20-11.src.rpm