$ git clone -n https://gitee.com/opencloudos-stream/gtkmm30.git /var/lib/mock/dist-ocs23-build-239392-21570/root/chroot_tmpdir/scmroot/gtkmm30
Cloning into '/var/lib/mock/dist-ocs23-build-239392-21570/root/chroot_tmpdir/scmroot/gtkmm30'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/gtkmm30
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5eb0888 Rebuilt for loongarch release