$ git clone -n https://src.fedoraproject.org/rpms/gtkdatabox.git /var/lib/mock/f45-build-13180-447/root/chroot_tmpdir/scmroot/gtkdatabox
Cloning into '/var/lib/mock/f45-build-13180-447/root/chroot_tmpdir/scmroot/gtkdatabox'...
$ git fetch origin 5d76983d7e4a26e9355f5772efb343fcaaaecc7a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gtkdatabox
 * [new ref]         5d76983d7e4a26e9355f5772efb343fcaaaecc7a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5d76983 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild