$ git clone -n https://src.fedoraproject.org/rpms/perl-B-Compiling.git /var/lib/mock/f31-build-44430-26151/root/thebuilddir/tmp/scmroot/perl-B-Compiling
Cloning into '/var/lib/mock/f31-build-44430-26151/root/thebuilddir/tmp/scmroot/perl-B-Compiling'...
$ git reset --hard 265b3842caa966f91147ebe69eb1bc0a4ec9d95e
HEAD is now at 265b384 Perl 5.30 rebuild