$ git clone -n https://src.fedoraproject.org/rpms/R-deldir /var/lib/mock/f39-build-1586238-38186/root/chroot_tmpdir/scmroot/R-deldir
Cloning into '/var/lib/mock/f39-build-1586238-38186/root/chroot_tmpdir/scmroot/R-deldir'...
$ git fetch origin e7b4195ff54c709cf19933cec3ce53583c029fb9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-deldir
 * [new ref]         e7b4195ff54c709cf19933cec3ce53583c029fb9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e7b4195 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild