$ git clone -n https://src.fedoraproject.org/rpms/perl-Astro-SunTime.git /var/lib/mock/f45-build-21817-588/root/chroot_tmpdir/scmroot/perl-Astro-SunTime
Cloning into '/var/lib/mock/f45-build-21817-588/root/chroot_tmpdir/scmroot/perl-Astro-SunTime'...
$ git fetch origin c67ec8387fdef88189441c9a089851c5d7846062:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Astro-SunTime
 * [new ref]         c67ec8387fdef88189441c9a089851c5d7846062 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c67ec83 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild