$ git clone -n https://src.fedoraproject.org/rpms/R-cyclocomp.git /var/lib/mock/f45-build-6052-346/root/chroot_tmpdir/scmroot/R-cyclocomp
Cloning into '/var/lib/mock/f45-build-6052-346/root/chroot_tmpdir/scmroot/R-cyclocomp'...
$ git fetch origin f22eb9ab50aa1a6ac742ab3f40b590b65aa95429:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-cyclocomp
 * [new ref]         f22eb9ab50aa1a6ac742ab3f40b590b65aa95429 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f22eb9a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild