$ git clone -n https://src.fedoraproject.org/rpms/perl-Class-MethodMaker.git /var/lib/mock/f45-build-22401-591/root/chroot_tmpdir/scmroot/perl-Class-MethodMaker
Cloning into '/var/lib/mock/f45-build-22401-591/root/chroot_tmpdir/scmroot/perl-Class-MethodMaker'...
$ git fetch origin da5dcde158979d8add6cd667927cfc28e141fe9e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Class-MethodMaker
 * [new ref]         da5dcde158979d8add6cd667927cfc28e141fe9e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at da5dcde Perl 5.44 rebuild