$ git clone -n https://src.fedoraproject.org/rpms/R-curl.git /var/lib/mock/f38-build-side-42-init-devel-1018541-29608/root/chroot_tmpdir/scmroot/R-curl
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1018541-29608/root/chroot_tmpdir/scmroot/R-curl'...
$ git fetch origin caf19c22fda26faa9f49ace32d90a434fee7f83f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-curl
 * [new ref]         caf19c22fda26faa9f49ace32d90a434fee7f83f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at caf19c2 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild