$ git clone -n https://src.fedoraproject.org/rpms/R-date.git /var/lib/mock/f39-build-1536029-36255/root/chroot_tmpdir/scmroot/R-date
Cloning into '/var/lib/mock/f39-build-1536029-36255/root/chroot_tmpdir/scmroot/R-date'...
$ git fetch origin b2fab3174b60a6d1f66dc1322536473236289df4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-date
 * [new ref]         b2fab3174b60a6d1f66dc1322536473236289df4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b2fab31 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild