$ git clone -n https://gitee.com/kanghou-silver/gdb.git /var/lib/mock/dist-an23-build-459926-73691/root/chroot_tmpdir/scmroot/gdb
Cloning into '/var/lib/mock/dist-an23-build-459926-73691/root/chroot_tmpdir/scmroot/gdb'...
$ git fetch origin 977c88e3a32c044032d18d2e4d04051d325aeec9:KOJI_FETCH_HEAD
From https://gitee.com/kanghou-silver/gdb
 * [new ref]         977c88e3a32c044032d18d2e4d04051d325aeec9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 977c88e add target support for sw64