$ git clone -n https://gitee.com/mgb01105731/erlang_3.git /var/lib/mock/dist-an23-epao-build-305735-66738/root/chroot_tmpdir/scmroot/erlang_3
Cloning into '/var/lib/mock/dist-an23-epao-build-305735-66738/root/chroot_tmpdir/scmroot/erlang_3'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/erlang_3
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 615f552 update to version 26.1