$ git clone -n https://src.fedoraproject.org/rpms/perl-Net-DAVTalk.git /var/lib/mock/f45-build-25242-610/root/chroot_tmpdir/scmroot/perl-Net-DAVTalk
Cloning into '/var/lib/mock/f45-build-25242-610/root/chroot_tmpdir/scmroot/perl-Net-DAVTalk'...
$ git fetch origin 1cb8657b64fbfa85fe6f1a020acc8b1368c17aa1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Net-DAVTalk
 * [new ref]         1cb8657b64fbfa85fe6f1a020acc8b1368c17aa1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1cb8657 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild