$ git clone -n https://src.fedoraproject.org/rpms/perl-Object-Signature.git /var/lib/mock/f45-build-25490-611/root/chroot_tmpdir/scmroot/perl-Object-Signature
Cloning into '/var/lib/mock/f45-build-25490-611/root/chroot_tmpdir/scmroot/perl-Object-Signature'...
$ git fetch origin 71917ad0326cccd0f8c1d19f42fae8eb16fbe622:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Object-Signature
 * [new ref]         71917ad0326cccd0f8c1d19f42fae8eb16fbe622 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 71917ad Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild