$ git clone -n https://src.fedoraproject.org/rpms/gsl.git /var/lib/mock/f31-build-50473-27410/root/chroot_tmpdir/scmroot/gsl
Cloning into '/var/lib/mock/f31-build-50473-27410/root/chroot_tmpdir/scmroot/gsl'...
$ git reset --hard 7db091c7065fc1bd39e8d862e9c437090675bbc6
HEAD is now at 7db091c Update to 2.5.