$ git clone -n https://src.fedoraproject.org/rpms/perl-Class-Tiny.git /var/lib/mock/f45-build-22353-591/root/chroot_tmpdir/scmroot/perl-Class-Tiny
Cloning into '/var/lib/mock/f45-build-22353-591/root/chroot_tmpdir/scmroot/perl-Class-Tiny'...
$ git fetch origin f89b8044234f5b23ef1ae687e38b8e5f254fafef:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Class-Tiny
 * [new ref]         f89b8044234f5b23ef1ae687e38b8e5f254fafef -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f89b804 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild