$ git clone -n https://src.fedoraproject.org/rpms/tiresias-fonts.git /var/lib/mock/f39-build-1731561-41251/root/chroot_tmpdir/scmroot/tiresias-fonts
Cloning into '/var/lib/mock/f39-build-1731561-41251/root/chroot_tmpdir/scmroot/tiresias-fonts'...
$ git fetch origin 6e7b99738ef154ad0e64cbec2adce4f700d3e280:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tiresias-fonts
 * [new ref]         6e7b99738ef154ad0e64cbec2adce4f700d3e280 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6e7b997 fix license tag