$ git clone -n https://src.fedoraproject.org/rpms/perl-Params-Classify.git /var/lib/mock/f41-build-1108018-20090/root/chroot_tmpdir/scmroot/perl-Params-Classify
Cloning into '/var/lib/mock/f41-build-1108018-20090/root/chroot_tmpdir/scmroot/perl-Params-Classify'...
$ git fetch origin 9c08a32a68d6a1e6f9bd65241d780acf19c53df2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Params-Classify
 * [new ref]         9c08a32a68d6a1e6f9bd65241d780acf19c53df2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9c08a32 Perl 5.40 rebuild