$ git clone -n https://src.fedoraproject.org/rpms/R-acepack.git /var/lib/mock/f40-build-789291-135700/root/chroot_tmpdir/scmroot/R-acepack
Cloning into '/var/lib/mock/f40-build-789291-135700/root/chroot_tmpdir/scmroot/R-acepack'...
$ git fetch origin 420dd267ce7fbef2da5a59a2ac764c4687c569ff:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-acepack
 * [new ref]         420dd267ce7fbef2da5a59a2ac764c4687c569ff -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 420dd26 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild