$ git clone -n https://src.fedoraproject.org/rpms/R-geepack /var/lib/mock/f39-build-1588764-38229/root/chroot_tmpdir/scmroot/R-geepack
Cloning into '/var/lib/mock/f39-build-1588764-38229/root/chroot_tmpdir/scmroot/R-geepack'...
$ git fetch origin 15bfa8066622cb6b45093051e2620aba538ac1ac:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-geepack
 * [new ref]         15bfa8066622cb6b45093051e2620aba538ac1ac -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 15bfa80 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild