$ git clone -n https://gitee.com/src-opencloudos-rpms/gcc-toolset-12-gcc.git /var/lib/mock/dist-oc8-build-100163-63155/root/chroot_tmpdir/scmroot/gcc-toolset-12-gcc
Cloning into '/var/lib/mock/dist-oc8-build-100163-63155/root/chroot_tmpdir/scmroot/gcc-toolset-12-gcc'...
$ git fetch origin 771b585fa8006a2ac3900188c9b4e3bd13d60289:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/gcc-toolset-12-gcc
 * [new ref]         771b585fa8006a2ac3900188c9b4e3bd13d60289 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 771b585 import gcc-toolset-12-gcc-12.2.1-7.8.tl3