$ git clone -n https://src.fedoraproject.org/rpms/R-sourcetools.git /var/lib/mock/f38-build-side-42-init-devel-981921-29038/root/chroot_tmpdir/scmroot/R-sourcetools
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-981921-29038/root/chroot_tmpdir/scmroot/R-sourcetools'...
$ git fetch origin 3dc5eaddb08c6fca77eb8c3b96369300659364ae:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-sourcetools
 * [new ref]         3dc5eaddb08c6fca77eb8c3b96369300659364ae -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3dc5ead Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild