$ git clone -n https://src.fedoraproject.org/rpms/giac.git /var/lib/mock/f33-build-279268-51688/root/chroot_tmpdir/scmroot/giac
Cloning into '/var/lib/mock/f33-build-279268-51688/root/chroot_tmpdir/scmroot/giac'...
$ git reset --hard 1b27315c79198b541da5e11b1933c9a0b8b08507
HEAD is now at 1b27315 Rebuild for nauty 2.7.1.