$ git clone -n https://src.fedoraproject.org/rpms/overlayfs-tools.git /var/lib/mock/f40-build-795280-140106/root/chroot_tmpdir/scmroot/overlayfs-tools
Cloning into '/var/lib/mock/f40-build-795280-140106/root/chroot_tmpdir/scmroot/overlayfs-tools'...
$ git fetch origin c2dc6a30f3df604b9dc48344a949d6d3807a8e3d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/overlayfs-tools
 * [new ref]         c2dc6a30f3df604b9dc48344a949d6d3807a8e3d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c2dc6a3 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild