$ git clone -n https://src.fedoraproject.org/rpms/perl-File-FindLib.git /var/lib/mock/f45-build-23580-598/root/chroot_tmpdir/scmroot/perl-File-FindLib
Cloning into '/var/lib/mock/f45-build-23580-598/root/chroot_tmpdir/scmroot/perl-File-FindLib'...
$ git fetch origin cbcd32bfa253d0ac623349a01bb2bebdab81a5b0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-File-FindLib
 * [new ref]         cbcd32bfa253d0ac623349a01bb2bebdab81a5b0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cbcd32b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild