$ git clone -n https://gitee.com/src-anolis-os/qemu-kvm.git /var/lib/mock/dist-an23-build-286474-64832/root/chroot_tmpdir/scmroot/qemu-kvm
Cloning into '/var/lib/mock/dist-an23-build-286474-64832/root/chroot_tmpdir/scmroot/qemu-kvm'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/src-anolis-os/qemu-kvm
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ff7d812 7.2.4