$ git clone -n https://src.fedoraproject.org/rpms/perl-threads-shared.git /var/lib/mock/f31-build-44230-25948/root/thebuilddir/tmp/scmroot/perl-threads-shared
Cloning into '/var/lib/mock/f31-build-44230-25948/root/thebuilddir/tmp/scmroot/perl-threads-shared'...
$ git reset --hard 578f0ab66082ed6a6dcaf9e337ac6247f3d5c6e4
HEAD is now at 578f0ab Modernize a spec file