$ git clone -n https://src.fedoraproject.org/rpms/R-praise.git /var/lib/mock/f45-build-6322-347/root/chroot_tmpdir/scmroot/R-praise
Cloning into '/var/lib/mock/f45-build-6322-347/root/chroot_tmpdir/scmroot/R-praise'...
$ git fetch origin aca5b29fdeb10b3cdab782d4d6cd80d0a67f7db1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-praise
 * [new ref]         aca5b29fdeb10b3cdab782d4d6cd80d0a67f7db1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aca5b29 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild