$ git clone -n https://gitee.com/mgb01105731/libpng.git /var/lib/mock/dist-an23.2-build-414484-72829/root/chroot_tmpdir/scmroot/libpng
Cloning into '/var/lib/mock/dist-an23.2-build-414484-72829/root/chroot_tmpdir/scmroot/libpng'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/libpng
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 200b4a0 Sync up from CentOS Stream libpng-1.6.40-1(tdawson@redhat.com)