$ git clone -n https://src.fedoraproject.org/rpms/perl-Unicode-CheckUTF8.git /var/lib/mock/f43-perl-60947799-6586617/root/chroot_tmpdir/scmroot/perl-Unicode-CheckUTF8
Cloning into '/var/lib/mock/f43-perl-60947799-6586617/root/chroot_tmpdir/scmroot/perl-Unicode-CheckUTF8'...
$ git fetch origin e458aeb549c6e67414e5be7bf05ee69e08154901:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Unicode-CheckUTF8
 * [new ref]         e458aeb549c6e67414e5be7bf05ee69e08154901 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e458aeb Perl 5.42 rebuild