$ git clone -n https://src.fedoraproject.org/rpms/perl-Class-MethodMaker.git /var/lib/mock/f41-build-816436-150177/root/chroot_tmpdir/scmroot/perl-Class-MethodMaker
Cloning into '/var/lib/mock/f41-build-816436-150177/root/chroot_tmpdir/scmroot/perl-Class-MethodMaker'...
$ git fetch origin a5c2f7aa6e9115e46de899e0202dc50e5b1e949b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Class-MethodMaker
 * [new ref]         a5c2f7aa6e9115e46de899e0202dc50e5b1e949b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a5c2f7a Perl 5.40 rebuild