$ git clone -n https://src.fedoraproject.org/rpms/perl-Perl-Stripper.git /var/lib/mock/f45-build-25784-613/root/chroot_tmpdir/scmroot/perl-Perl-Stripper
Cloning into '/var/lib/mock/f45-build-25784-613/root/chroot_tmpdir/scmroot/perl-Perl-Stripper'...
$ git fetch origin 8ba62aa918167da324ebf156a09f5c3af4d5940d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Perl-Stripper
 * [new ref]         8ba62aa918167da324ebf156a09f5c3af4d5940d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8ba62aa Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild