$ git clone -n https://src.fedoraproject.org/rpms/perl-FFI-Platypus.git /var/lib/mock/f45-build-23460-597/root/chroot_tmpdir/scmroot/perl-FFI-Platypus
Cloning into '/var/lib/mock/f45-build-23460-597/root/chroot_tmpdir/scmroot/perl-FFI-Platypus'...
$ git fetch origin cfea891b51b1ea3eeaff4a0ef4fac6116cff407e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-FFI-Platypus
 * [new ref]         cfea891b51b1ea3eeaff4a0ef4fac6116cff407e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cfea891 Perl 5.44 rebuild