$ git clone -n https://src.fedoraproject.org/rpms/R-fontawesome.git /var/lib/mock/f45-build-6085-346/root/chroot_tmpdir/scmroot/R-fontawesome
Cloning into '/var/lib/mock/f45-build-6085-346/root/chroot_tmpdir/scmroot/R-fontawesome'...
$ git fetch origin 58b512c635c343cbc73498eab35b55571e7253a8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-fontawesome
 * [new ref]         58b512c635c343cbc73498eab35b55571e7253a8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 58b512c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild