$ git clone -n https://gitee.com/mgb01105731/libbytesize.git /var/lib/mock/dist-an23-build-341263-69878/root/chroot_tmpdir/scmroot/libbytesize
Cloning into '/var/lib/mock/dist-an23-build-341263-69878/root/chroot_tmpdir/scmroot/libbytesize'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/libbytesize
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 03f68a3 update to version 2.10