$ git clone -n https://src.fedoraproject.org/rpms/R-filehash.git /var/lib/mock/f39-build-1470497-33899/root/chroot_tmpdir/scmroot/R-filehash
Cloning into '/var/lib/mock/f39-build-1470497-33899/root/chroot_tmpdir/scmroot/R-filehash'...
$ git fetch origin ae024159d8450bee64099e0dabad7c6673f3bee8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-filehash
 * [new ref]         ae024159d8450bee64099e0dabad7c6673f3bee8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ae02415 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild