$ git clone -n https://src.fedoraproject.org/rpms/perl-PerlIO-eol.git /var/lib/mock/f41-build-815809-149783/root/chroot_tmpdir/scmroot/perl-PerlIO-eol
Cloning into '/var/lib/mock/f41-build-815809-149783/root/chroot_tmpdir/scmroot/perl-PerlIO-eol'...
$ git fetch origin 8cfc34f211c9eda0c5afd0b9dfcf097b44ac68ad:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-PerlIO-eol
 * [new ref]         8cfc34f211c9eda0c5afd0b9dfcf097b44ac68ad -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8cfc34f Perl 5.40 rebuild