$ git clone -n https://src.fedoraproject.org/rpms/perl-Filter.git /var/lib/mock/f41-build-816924-150476/root/chroot_tmpdir/scmroot/perl-Filter
Cloning into '/var/lib/mock/f41-build-816924-150476/root/chroot_tmpdir/scmroot/perl-Filter'...
$ git fetch origin 22f83c5d1f8531b43d8771938a09d00ee17bd981:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Filter
 * [new ref]         22f83c5d1f8531b43d8771938a09d00ee17bd981 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 22f83c5 Perl 5.40 re-rebuild of bootstrapped packages