$ git clone -n https://src.fedoraproject.org/rpms/python-scikit-image.git /var/lib/mock/f40-build-770954-125901/root/chroot_tmpdir/scmroot/python-scikit-image
Cloning into '/var/lib/mock/f40-build-770954-125901/root/chroot_tmpdir/scmroot/python-scikit-image'...
$ git fetch origin c7d75fd672ae0d77bede84aa4d2abcc3ed1578c9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-scikit-image
 * [new ref]         c7d75fd672ae0d77bede84aa4d2abcc3ed1578c9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c7d75fd New upstream source