$ git clone -n https://gitee.com/mgb01105731/compiler-rt.git /var/lib/mock/dist-an23.1-devel-build-364628-71270/root/chroot_tmpdir/scmroot/compiler-rt
Cloning into '/var/lib/mock/dist-an23.1-devel-build-364628-71270/root/chroot_tmpdir/scmroot/compiler-rt'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/compiler-rt
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c55e6c6 rebuild