$ git clone -n https://gitee.com/xinlong-chen/gcc_1 /var/lib/mock/dist-ocs23-riscv-base-build-322042-34199/root/chroot_tmpdir/scmroot/gcc_1
Cloning into '/var/lib/mock/dist-ocs23-riscv-base-build-322042-34199/root/chroot_tmpdir/scmroot/gcc_1'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/xinlong-chen/gcc_1
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9a91f37 add riscv support and enable libasan/libubsan for riscv