$ git clone -n https://src.fedoraproject.org/rpms/perl-Unicode-CheckUTF8.git /var/lib/mock/f45-build-27301-622/root/chroot_tmpdir/scmroot/perl-Unicode-CheckUTF8
Cloning into '/var/lib/mock/f45-build-27301-622/root/chroot_tmpdir/scmroot/perl-Unicode-CheckUTF8'...
$ git fetch origin 51304d6c0ab8458241f45c2988b8921baf5b09c9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Unicode-CheckUTF8
 * [new ref]         51304d6c0ab8458241f45c2988b8921baf5b09c9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 51304d6 Perl 5.44 rebuild