$ git clone -n https://src.fedoraproject.org/rpms/gputils.git /var/lib/mock/f45-build-12962-444/root/chroot_tmpdir/scmroot/gputils
Cloning into '/var/lib/mock/f45-build-12962-444/root/chroot_tmpdir/scmroot/gputils'...
$ git fetch origin 87e738f04c7ccbc3f349f4532092e63803118f44:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gputils
 * [new ref]         87e738f04c7ccbc3f349f4532092e63803118f44 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 87e738f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild