$ git clone -n https://src.fedoraproject.org/rpms/perl-Acme-Alien-DontPanic.git /var/lib/mock/f45-build-21551-586/root/chroot_tmpdir/scmroot/perl-Acme-Alien-DontPanic
Cloning into '/var/lib/mock/f45-build-21551-586/root/chroot_tmpdir/scmroot/perl-Acme-Alien-DontPanic'...
$ git fetch origin 08dae9c2e2670d9765eb5b1281a972e94d0ea5ff:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Acme-Alien-DontPanic
 * [new ref]         08dae9c2e2670d9765eb5b1281a972e94d0ea5ff -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 08dae9c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild