$ git clone -n https://src.fedoraproject.org/rpms/perl-Curses.git /var/lib/mock/f41-build-816081-149982/root/chroot_tmpdir/scmroot/perl-Curses
Cloning into '/var/lib/mock/f41-build-816081-149982/root/chroot_tmpdir/scmroot/perl-Curses'...
$ git fetch origin 7f09f8c0b7e8d5b7b8145ef723f4b4cc9a3816f6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Curses
 * [new ref]         7f09f8c0b7e8d5b7b8145ef723f4b4cc9a3816f6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7f09f8c Perl 5.40 rebuild