$ git clone -n https://src.fedoraproject.org/rpms/libXau.git /var/lib/mock/f45-build-15775-479/root/chroot_tmpdir/scmroot/libXau
Cloning into '/var/lib/mock/f45-build-15775-479/root/chroot_tmpdir/scmroot/libXau'...
$ git fetch origin 26b19948012efe452a102729068d9ca02ceadf1c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libXau
 * [new ref]         26b19948012efe452a102729068d9ca02ceadf1c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 26b1994 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild