$ git clone -n https://src.fedoraproject.org/rpms/python-nose2.git /var/lib/mock/f40-build-1504145-23883/root/chroot_tmpdir/scmroot/python-nose2
Cloning into '/var/lib/mock/f40-build-1504145-23883/root/chroot_tmpdir/scmroot/python-nose2'...
$ git fetch origin 31fbd5131fe54b17c21296e8ac8ffd8b4f67bc37:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-nose2
 * [new ref]         31fbd5131fe54b17c21296e8ac8ffd8b4f67bc37 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 31fbd51 Update to 0.15.1 upstream release