$ git clone -n https://src.fedoraproject.org/rpms/perl-Clipboard.git /var/lib/mock/f45-build-22369-591/root/chroot_tmpdir/scmroot/perl-Clipboard
Cloning into '/var/lib/mock/f45-build-22369-591/root/chroot_tmpdir/scmroot/perl-Clipboard'...
$ git fetch origin 9850f394e1847ddf95c8c6244e4b04a16f1fe39d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Clipboard
 * [new ref]         9850f394e1847ddf95c8c6244e4b04a16f1fe39d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9850f39 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild