$ git clone -n https://src.fedoraproject.org/rpms/R-repurrrsive.git /var/lib/mock/f40-build-2305103-57063/root/chroot_tmpdir/scmroot/R-repurrrsive
Cloning into '/var/lib/mock/f40-build-2305103-57063/root/chroot_tmpdir/scmroot/R-repurrrsive'...
$ git fetch origin 21a64270b866e05937c07a67fee1f1a4ddd2c07f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-repurrrsive
 * [new ref]         21a64270b866e05937c07a67fee1f1a4ddd2c07f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 21a6427 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild