$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-Harness.git /var/lib/mock/f41-build-816902-150476/root/chroot_tmpdir/scmroot/perl-Test-Harness
Cloning into '/var/lib/mock/f41-build-816902-150476/root/chroot_tmpdir/scmroot/perl-Test-Harness'...
$ git fetch origin 2ec90fe55ace214952ce7acdb11e7b5bfd9e698f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-Harness
 * [new ref]         2ec90fe55ace214952ce7acdb11e7b5bfd9e698f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2ec90fe Perl 5.40 re-rebuild of bootstrapped packages