$ git clone -n https://gitee.com/src-anolis-os/gcc.git /var/lib/mock/dist-an23-loongarch-build-322028-67906/root/chroot_tmpdir/scmroot/gcc
Cloning into '/var/lib/mock/dist-an23-loongarch-build-322028-67906/root/chroot_tmpdir/scmroot/gcc'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/src-anolis-os/gcc
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
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Updating files: 100% (24/24), done.
HEAD is now at c1de605 LoongArch: skip check