$ git clone -n https://src.fedoraproject.org/rpms/perl-Catalyst-Manual.git /var/lib/mock/f45-build-22159-590/root/chroot_tmpdir/scmroot/perl-Catalyst-Manual
Cloning into '/var/lib/mock/f45-build-22159-590/root/chroot_tmpdir/scmroot/perl-Catalyst-Manual'...
$ git fetch origin 054cb10462c7deb856b4c761a13955d90f2e5923:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Catalyst-Manual
 * [new ref]         054cb10462c7deb856b4c761a13955d90f2e5923 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 054cb10 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild