$ git clone -n https://gitee.com/src-opencloudos-rpms/gcc.git /var/lib/mock/dist-oc9-build-230731-81512/root/chroot_tmpdir/scmroot/gcc
Cloning into '/var/lib/mock/dist-oc9-build-230731-81512/root/chroot_tmpdir/scmroot/gcc'...
$ git fetch origin 7f39a94087a3054f9e480afe2264915fc4a2ed48:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/gcc
 * [new ref]         7f39a94087a3054f9e480afe2264915fc4a2ed48 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7f39a94 import gcc-12.3.1.6-3.tl4