$ git clone -n https://gitee.com/lxpzero/gdb.git /var/lib/mock/dist-an23.0-build-315078-64688/root/chroot_tmpdir/scmroot/gdb
Cloning into '/var/lib/mock/dist-an23.0-build-315078-64688/root/chroot_tmpdir/scmroot/gdb'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/lxpzero/gdb
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d7de866 update to 13.2