$ git clone -n https://src.fedoraproject.org/rpms/astrometry-tycho2.git /var/lib/mock/f31-build-102223-33497/root/chroot_tmpdir/scmroot/astrometry-tycho2
Cloning into '/var/lib/mock/f31-build-102223-33497/root/chroot_tmpdir/scmroot/astrometry-tycho2'...
$ git reset --hard 5086016f8d88b21459afe781e6a46dd97f041dfd
HEAD is now at 5086016 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild