$ git clone -n https://src.fedoraproject.org/rpms/perl-Filter-signatures.git /var/lib/mock/f45-build-23638-598/root/chroot_tmpdir/scmroot/perl-Filter-signatures
Cloning into '/var/lib/mock/f45-build-23638-598/root/chroot_tmpdir/scmroot/perl-Filter-signatures'...
$ git fetch origin 94401bc36454d39ee2543b924366ac9e5a282398:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Filter-signatures
 * [new ref]         94401bc36454d39ee2543b924366ac9e5a282398 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 94401bc Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild