$ git clone -n https://src.fedoraproject.org/rpms/perl-Perl-OSType.git /var/lib/mock/f41-build-816880-150476/root/chroot_tmpdir/scmroot/perl-Perl-OSType
Cloning into '/var/lib/mock/f41-build-816880-150476/root/chroot_tmpdir/scmroot/perl-Perl-OSType'...
$ git fetch origin c19750e5dc0e701d7248a65210b4758507fd345e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Perl-OSType
 * [new ref]         c19750e5dc0e701d7248a65210b4758507fd345e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c19750e Perl 5.40 re-rebuild of bootstrapped packages