$ git clone -n https://src.fedoraproject.org/rpms/mingw-python-flask.git /var/lib/mock/f42-build-side-1-3578374-46814/root/chroot_tmpdir/scmroot/mingw-python-flask
Cloning into '/var/lib/mock/f42-build-side-1-3578374-46814/root/chroot_tmpdir/scmroot/mingw-python-flask'...
$ git fetch origin 2423e09b7138818b7705094190d05be9e22b840c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mingw-python-flask
 * [new ref]         2423e09b7138818b7705094190d05be9e22b840c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2423e09 Update to 3.1.1