$ git clone -n https://src.fedoraproject.org/rpms/perl-Tie-Function.git /var/lib/mock/f45-build-27163-621/root/chroot_tmpdir/scmroot/perl-Tie-Function
Cloning into '/var/lib/mock/f45-build-27163-621/root/chroot_tmpdir/scmroot/perl-Tie-Function'...
$ git fetch origin 7c5ee5ab80ab7519855495f16259c94f443a3f6c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Tie-Function
 * [new ref]         7c5ee5ab80ab7519855495f16259c94f443a3f6c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7c5ee5a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild