$ git clone -n https://src.fedoraproject.org/rpms/sagemath.git /var/lib/mock/f37-build-655370-72855/root/chroot_tmpdir/scmroot/sagemath
Cloning into '/var/lib/mock/f37-build-655370-72855/root/chroot_tmpdir/scmroot/sagemath'...
$ git reset --hard 545b239d33cea82e9e70aec687591d37d8084305
HEAD is now at 545b239 Rebuild for gap 4.12.0 and pari 2.15.0.