$ git clone -n https://src.fedoraproject.org/rpms/visidata.git /var/lib/mock/f40-build-2647574-66709/root/chroot_tmpdir/scmroot/visidata
Cloning into '/var/lib/mock/f40-build-2647574-66709/root/chroot_tmpdir/scmroot/visidata'...
$ git fetch origin 5fe5b0b54a95c61e27dd47995c214afad26f34cc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/visidata
 * [new ref]         5fe5b0b54a95c61e27dd47995c214afad26f34cc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5fe5b0b Rebuild to fix shebangs