$ git clone -n https://src.fedoraproject.org/rpms/R-prettycode.git /var/lib/mock/f39-build-1586889-38213/root/chroot_tmpdir/scmroot/R-prettycode
Cloning into '/var/lib/mock/f39-build-1586889-38213/root/chroot_tmpdir/scmroot/R-prettycode'...
$ git fetch origin 896a881a5259fe9e0f39abc52eabe523e4a7e085:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-prettycode
 * [new ref]         896a881a5259fe9e0f39abc52eabe523e4a7e085 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 896a881 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild