$ git clone -n https://src.fedoraproject.org/rpms/perl-Data-Taxi.git /var/lib/mock/f40-build-2243487-53669/root/chroot_tmpdir/scmroot/perl-Data-Taxi
Cloning into '/var/lib/mock/f40-build-2243487-53669/root/chroot_tmpdir/scmroot/perl-Data-Taxi'...
$ git fetch origin 80811479c9e36dc4951539976c0f552b75a434f6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Data-Taxi
 * [new ref]         80811479c9e36dc4951539976c0f552b75a434f6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8081147 Update license to SPDX format; Use %%{make_build} and %%{make_install}