$ git clone -n https://src.fedoraproject.org/rpms/perl-Storm.git /var/lib/mock/f45-build-26174-616/root/chroot_tmpdir/scmroot/perl-Storm
Cloning into '/var/lib/mock/f45-build-26174-616/root/chroot_tmpdir/scmroot/perl-Storm'...
$ git fetch origin 3cf9b85eb250f611eb7ef3053e7ef262d7e22f48:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Storm
 * [new ref]         3cf9b85eb250f611eb7ef3053e7ef262d7e22f48 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3cf9b85 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild