$ git clone -n https://src.fedoraproject.org/rpms/perl-match-simple-XS.git /var/lib/mock/f45-build-27698-625/root/chroot_tmpdir/scmroot/perl-match-simple-XS
Cloning into '/var/lib/mock/f45-build-27698-625/root/chroot_tmpdir/scmroot/perl-match-simple-XS'...
$ git fetch origin e89e5d3e3fce2128ea2d95af700c51e7992d9b9e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-match-simple-XS
 * [new ref]         e89e5d3e3fce2128ea2d95af700c51e7992d9b9e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e89e5d3 Perl 5.44 rebuild