$ git clone -n https://src.fedoraproject.org/rpms/libXxf86misc.git /var/lib/mock/f45-build-15804-479/root/chroot_tmpdir/scmroot/libXxf86misc
Cloning into '/var/lib/mock/f45-build-15804-479/root/chroot_tmpdir/scmroot/libXxf86misc'...
$ git fetch origin 96b428a5d723b3dc7f413338b75cc257be0ddc25:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libXxf86misc
 * [new ref]         96b428a5d723b3dc7f413338b75cc257be0ddc25 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 96b428a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild