$ git clone -n https://gitee.com/src-anolis-os/isomd5sum.git /var/lib/mock/dist-an23-build-331630-69545/root/chroot_tmpdir/scmroot/isomd5sum
Cloning into '/var/lib/mock/dist-an23-build-331630-69545/root/chroot_tmpdir/scmroot/isomd5sum'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/src-anolis-os/isomd5sum
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5e662f2 add loongarch64 support for isomd5sum