$ git clone -n https://src.fedoraproject.org/rpms/perl-Search-Xapian.git /var/lib/mock/f45-build-26167-616/root/chroot_tmpdir/scmroot/perl-Search-Xapian
Cloning into '/var/lib/mock/f45-build-26167-616/root/chroot_tmpdir/scmroot/perl-Search-Xapian'...
$ git fetch origin e047791178c6fe2a03bb28c4f21cfd8fec5cd99b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Search-Xapian
 * [new ref]         e047791178c6fe2a03bb28c4f21cfd8fec5cd99b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e047791 Perl 5.44 rebuild