$ git clone -n https://src.fedoraproject.org/rpms/R-covr.git /var/lib/mock/f39-build-1544693-36661/root/chroot_tmpdir/scmroot/R-covr
Cloning into '/var/lib/mock/f39-build-1544693-36661/root/chroot_tmpdir/scmroot/R-covr'...
$ git fetch origin f4ef7d690b79145f1a005bd547b2d6da00d2520a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-covr
 * [new ref]         f4ef7d690b79145f1a005bd547b2d6da00d2520a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f4ef7d6 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild