$ git clone -n https://gitee.com/src-anolis-os/gcc-toolset-10-gcc.git /var/lib/mock/dist-an8.4-gcc-toolset-10-build-294668-65742/root/chroot_tmpdir/scmroot/gcc-toolset-10-gcc
Cloning into '/var/lib/mock/dist-an8.4-gcc-toolset-10-build-294668-65742/root/chroot_tmpdir/scmroot/gcc-toolset-10-gcc'...
$ git fetch origin a8-10.2.1-3.5:KOJI_FETCH_HEAD
From https://gitee.com/src-anolis-os/gcc-toolset-10-gcc
 * [new branch]      a8-10.2.1-3.5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 847fd94 add scl prefix for files