$ git clone -n https://src.fedoraproject.org/rpms/R-rhub.git /var/lib/mock/f38-build-side-42-init-devel-889418-28525/root/chroot_tmpdir/scmroot/R-rhub
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-889418-28525/root/chroot_tmpdir/scmroot/R-rhub'...
$ git fetch origin 224dd6ec2cef86b920d160bb932660964583fa21:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-rhub
 * [new ref]         224dd6ec2cef86b920d160bb932660964583fa21 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 224dd6e Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild