$ git clone -n https://src.fedoraproject.org/rpms/perl-Alien-Libxml2.git /var/lib/mock/f31-build-46753-26666/root/thebuilddir/tmp/scmroot/perl-Alien-Libxml2
Cloning into '/var/lib/mock/f31-build-46753-26666/root/thebuilddir/tmp/scmroot/perl-Alien-Libxml2'...
$ git reset --hard 2270137d0150da14298c34f4cee439177b57acf9
HEAD is now at 2270137 Perl 5.30 rebuild