$ git clone -n https://src.fedoraproject.org/rpms/perl-ExtUtils-MakeMaker.git /var/lib/mock/f45-build-23424-597/root/chroot_tmpdir/scmroot/perl-ExtUtils-MakeMaker
Cloning into '/var/lib/mock/f45-build-23424-597/root/chroot_tmpdir/scmroot/perl-ExtUtils-MakeMaker'...
$ git fetch origin f3cd008a3048a1a64a3e6aedcaf9f4bf7c09fb50:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-ExtUtils-MakeMaker
 * [new ref]         f3cd008a3048a1a64a3e6aedcaf9f4bf7c09fb50 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f3cd008 Perl 5.44 re-rebuild of bootstrapped packages