$ git clone -n https://src.fedoraproject.org/rpms/perl-Crypt-IDEA.git /var/lib/mock/f45-build-22599-593/root/chroot_tmpdir/scmroot/perl-Crypt-IDEA
Cloning into '/var/lib/mock/f45-build-22599-593/root/chroot_tmpdir/scmroot/perl-Crypt-IDEA'...
$ git fetch origin 20a8a259b1719387fd5df80d9638ae5b44fc641f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Crypt-IDEA
 * [new ref]         20a8a259b1719387fd5df80d9638ae5b44fc641f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 20a8a25 Add rpmlintrc