$ git clone -n https://src.fedoraproject.org/rpms/perl-Net-CalDAVTalk.git /var/lib/mock/f45-build-25233-610/root/chroot_tmpdir/scmroot/perl-Net-CalDAVTalk
Cloning into '/var/lib/mock/f45-build-25233-610/root/chroot_tmpdir/scmroot/perl-Net-CalDAVTalk'...
$ git fetch origin 7e987d96885782039c1887cd3d89e20ca740bd19:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Net-CalDAVTalk
 * [new ref]         7e987d96885782039c1887cd3d89e20ca740bd19 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7e987d9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild