$ git clone -n https://src.fedoraproject.org/rpms/gv.git /var/lib/mock/f41-build-side-1-2641686-26732/root/chroot_tmpdir/scmroot/gv
Cloning into '/var/lib/mock/f41-build-side-1-2641686-26732/root/chroot_tmpdir/scmroot/gv'...
$ git fetch origin ab62e39958adf3df478af7bdbdaafab31dc3bc14:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gv
 * [new ref]         ab62e39958adf3df478af7bdbdaafab31dc3bc14 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ab62e39 convert GPLv3+ license to SPDX