$ git clone -n https://src.fedoraproject.org/rpms/perl-POE-XS-Queue-Array.git /var/lib/mock/f41-build-816478-150205/root/chroot_tmpdir/scmroot/perl-POE-XS-Queue-Array
Cloning into '/var/lib/mock/f41-build-816478-150205/root/chroot_tmpdir/scmroot/perl-POE-XS-Queue-Array'...
$ git fetch origin 2b1426fdee3c571aea62b4e7326e5366230394cf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-POE-XS-Queue-Array
 * [new ref]         2b1426fdee3c571aea62b4e7326e5366230394cf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2b1426f Perl 5.40 rebuild