$ git clone -n https://src.fedoraproject.org/rpms/vinagre.git /var/lib/mock/f41-build-3153181-40629/root/chroot_tmpdir/scmroot/vinagre
Cloning into '/var/lib/mock/f41-build-3153181-40629/root/chroot_tmpdir/scmroot/vinagre'...
$ git fetch origin c2e5bf1be2aa15c396523d227317e46bed9ea937:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vinagre
 * [new ref]         c2e5bf1be2aa15c396523d227317e46bed9ea937 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c2e5bf1 convert GPLv2+ license to SPDX