$ git clone -n https://src.fedoraproject.org/rpms/R-readxl.git /var/lib/mock/f40-build-789207-135680/root/chroot_tmpdir/scmroot/R-readxl
Cloning into '/var/lib/mock/f40-build-789207-135680/root/chroot_tmpdir/scmroot/R-readxl'...
$ git fetch origin f3465a5e760d91d5ccec1b37e6be101294b87cb2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-readxl
 * [new ref]         f3465a5e760d91d5ccec1b37e6be101294b87cb2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f3465a5 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild