$ git clone -n https://src.fedoraproject.org/rpms/perl-ExtUtils-MakeMaker.git /var/lib/mock/f41-build-816923-150476/root/chroot_tmpdir/scmroot/perl-ExtUtils-MakeMaker
Cloning into '/var/lib/mock/f41-build-816923-150476/root/chroot_tmpdir/scmroot/perl-ExtUtils-MakeMaker'...
$ git fetch origin 37862f3c0b6ee7075c77f479ee4ba73f0496ab9f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-ExtUtils-MakeMaker
 * [new ref]         37862f3c0b6ee7075c77f479ee4ba73f0496ab9f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 37862f3 Perl 5.40 re-rebuild of bootstrapped packages