$ git clone -n https://src.fedoraproject.org/rpms/mingw-python-build.git /var/lib/mock/f38-build-side-42-init-devel-1391120-30727/root/chroot_tmpdir/scmroot/mingw-python-build
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1391120-30727/root/chroot_tmpdir/scmroot/mingw-python-build'...
$ git fetch origin 0136a11c7ee3f284d0e9e76545a24681e8a990f8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mingw-python-build
 * [new ref]         0136a11c7ee3f284d0e9e76545a24681e8a990f8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0136a11 BR: mingw-python3-flit-core