$ git clone -n https://src.fedoraproject.org/rpms/python-waterfurnace.git /var/lib/mock/f40-build-2136104-50815/root/chroot_tmpdir/scmroot/python-waterfurnace
Cloning into '/var/lib/mock/f40-build-2136104-50815/root/chroot_tmpdir/scmroot/python-waterfurnace'...
$ git fetch origin b0de9b9a7ecc2839f78baa05dad4b8dcebf26e66:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-waterfurnace
 * [new ref]         b0de9b9a7ecc2839f78baa05dad4b8dcebf26e66 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b0de9b9 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild