$ git clone -n https://gitee.com/src-opencloudos-rpms/gdb.git /var/lib/mock/dist-oc9-build-69864-47352/root/chroot_tmpdir/scmroot/gdb
Cloning into '/var/lib/mock/dist-oc9-build-69864-47352/root/chroot_tmpdir/scmroot/gdb'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/gdb
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 533ba9a import gdb-13.2-4.tl4