$ git clone -n https://gitee.com/DustMerlin/firebird.git /var/lib/mock/dist-an23-dde-build-394282-71812/root/chroot_tmpdir/scmroot/firebird
Cloning into '/var/lib/mock/dist-an23-dde-build-394282-71812/root/chroot_tmpdir/scmroot/firebird'...
$ git fetch origin 4240616e94fd7c5a1e5bce10b02541d4608b65a7:KOJI_FETCH_HEAD
From https://gitee.com/DustMerlin/firebird
 * [new ref]         4240616e94fd7c5a1e5bce10b02541d4608b65a7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4240616 update to Firebird-4.0.5.3140-0