$ git clone -n https://gitee.com/kanghou-silver/gdb.git /var/lib/mock/dist-an23-build-455040-73644/root/chroot_tmpdir/scmroot/gdb
Cloning into '/var/lib/mock/dist-an23-build-455040-73644/root/chroot_tmpdir/scmroot/gdb'...
$ git fetch origin be082a15d00190199357ad78b5738e6582894800:KOJI_FETCH_HEAD
From https://gitee.com/kanghou-silver/gdb
 * [new ref]         be082a15d00190199357ad78b5738e6582894800 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at be082a1 add support for sw64